Ozone catalytic oxidation carbon-based filler

Abstract

This utility model relates to the field of wastewater treatment technology and discloses an ozone catalytic oxidation carbon-based packing material, comprising a carbon-based support layer: the carbon-based support layer is made of honeycomb activated carbon, and each honeycomb channel inner wall is loaded with a metal oxide active coating, the metal oxide active coating being composed of titanium dioxide and ferric oxide mixed in a mass ratio of 2:1. This ozone catalytic oxidation carbon-based packing material, by using honeycomb activated carbon as the carbon-based support layer, has a unique honeycomb structure with a large specific surface area, providing abundant adsorption space. Simultaneously, it increases the contact area between ozone and the carbon-based support layer, which is beneficial for ozone adsorption and catalytic reaction. The synergistic effect of the metal oxide active coating loaded on the inner wall of the honeycomb channels, titanium dioxide, and ferric oxide can effectively improve the catalytic decomposition capacity of ozone, generate more hydroxyl radicals, and enhance the oxidative degradation effect on organic matter.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a carbon-based packing material for ozone catalytic oxidation. Background Technology

[0002] In wastewater treatment, ozone catalytic oxidation technology is widely used due to its high oxidation capacity. Carbon-based fillers, as an important medium in the ozone catalytic oxidation process, have a key impact on the treatment effect.

[0003] Regarding existing related technologies, the inventors believe that they often have the following defects: existing ozone catalytic oxidation carbon-based packing materials have problems such as uneven distribution of active sites, insufficient contact with ozone, and difficulty in adapting to complex water quality environments, which leads to low catalytic efficiency and organic matter removal effect, thus failing to meet increasingly stringent wastewater treatment requirements. Utility Model Content

[0004] The technical problem to be solved by this invention is that the existing technology has the disadvantages of unreasonable distribution of active sites in carbon-based fillers, insufficient contact with ozone, and poor adaptability to water quality. Therefore, we propose an ozone catalytic oxidation carbon-based filler.

[0005] To achieve the above objectives, this application adopts the following technical solution: an ozone catalytic oxidation carbon-based filler, comprising a carbon-based support layer: the carbon-based support layer is made of honeycomb activated carbon, and each honeycomb channel inner wall is loaded with a metal oxide active coating, the metal oxide active coating is composed of titanium dioxide and ferric oxide mixed in a mass ratio of 2:1, the surface of the carbon-based support layer is provided with a mesh-distributed layer of nanofiber carbon, the nanofiber carbon layer is loaded with transition metal elemental particles, the interior of the carbon-based support layer is provided with several through-flow gas guiding channels, the inner wall of the gas guiding channels is coated with a hydrophilic silica coating, the outer surface of the carbon-based support layer is provided with an uneven corrugated structure, and the top and bottom of the carbon-based support layer are provided with reinforcing mesh plates, the reinforcing mesh plates having several uniformly distributed through holes.

[0006] Preferably, the carbon-based carrier layer is made of honeycomb activated carbon, and each honeycomb channel inner wall is loaded with a metal oxide active coating. The metal oxide active coating is composed of titanium dioxide and ferric oxide in a mass ratio of 0.1-0.3 mm to the thickness of the nanofiber layer.

[0007] Preferably, the diameter of the gas guiding channel is 2-5 mm, and the spacing between adjacent gas guiding channels is 5-10 mm.

[0008] Preferably, the height of the corrugated structure is 1-3 mm and the depth of the trough is 0.5-2 mm.

[0009] Preferably, the reinforcing mesh plate is made of stainless steel, and the diameter of the through hole is 3-6mm.

[0010] Preferably, the thickness of the metal oxide active coating is 0.05-0.15 mm.

[0011] Preferably, the transition metal particles are cobalt particles with a particle size of 0.01-0.05 mm.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] In this invention, honeycomb activated carbon is used as the carbon-based carrier layer. Its unique honeycomb structure has a large specific surface area, which can provide abundant adsorption space. At the same time, it increases the contact area between ozone and the carbon-based carrier layer, which is conducive to the adsorption and catalytic reaction of ozone. The active coating of metal oxide loaded on the inner wall of the honeycomb channel, the synergistic effect of titanium dioxide and ferric oxide can effectively improve the catalytic decomposition ability of ozone, generate more hydroxyl radicals, and enhance the oxidative degradation effect of organic matter. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the carbon-based carrier layer structure of this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the carbon-based carrier layer of this utility model;

[0018] Figure 4 This is a schematic diagram of the reinforced mesh structure of this utility model.

[0019] Legend: 1. Carbon-based carrier layer; 2. Metal oxide active coating; 3. Nanofiber layer; 4. Transition metal elemental particles; 5. Gas flow channel; 6. Hydrophilic silica coating; 7. Corrugated structure; 8. Reinforcing mesh; 9. Through holes. Detailed Implementation

[0020] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0021] Reference Figures 1-4 As shown, this utility model provides a technical solution: an ozone catalytic oxidation carbon-based filler, comprising a carbon-based support layer 1: the carbon-based support layer 1 is made of honeycomb activated carbon, and each honeycomb channel inner wall is loaded with a metal oxide active coating 2, the metal oxide active coating 2 is composed of titanium dioxide and ferric oxide mixed in a mass ratio of 2:1, the surface of the carbon-based support layer 1 is provided with a mesh-distributed nanofiber carbon layer 3, the nanofiber carbon layer 3 is loaded with transition metal elemental particles 4, the interior of the carbon-based support layer 1 is provided with several through gas guiding channels 5, the inner wall of the gas guiding channels 5 is coated with a hydrophilic silica coating 6, and the outer surface of the carbon-based support layer 1 is provided with... The carbon-based carrier layer 1 has an uneven corrugated structure 7, and reinforcing mesh plates 8 are provided at both the top and bottom of the carbon-based carrier layer 1. The reinforcing mesh plates 8 have several uniformly distributed through holes 9. By using honeycomb activated carbon as the carbon-based carrier layer 1, its unique honeycomb structure has a large specific surface area, which can provide abundant adsorption space. At the same time, it increases the contact area between ozone and the carbon-based carrier layer 1, which is conducive to the adsorption and catalytic reaction of ozone. The active coating 2 of metal oxide loaded on the inner wall of the honeycomb channel, the synergistic effect of titanium dioxide and ferric oxide can effectively improve the catalytic decomposition ability of ozone, generate more hydroxyl radicals, and enhance the oxidative degradation effect of organic matter.

[0022] Reference Figure 2 As shown, in this embodiment, the thickness of the nanofiber layer 3 is 0.1-0.3 mm, and the thickness of the metal oxide active coating 2 is 0.05-0.15 mm. By setting the thickness of the nanofiber layer 3 to 0.1-0.3 mm, not only is the specific surface area further increased, but the transition metal particles 4 loaded on it can also form a synergistic catalytic effect with the metal oxide active coating 2, thereby improving the efficiency of the catalytic reaction. The mesh structure of the nanofiber layer 3 can also play a certain filtering role, intercepting some impurities in the sewage and preventing them from clogging the pores of the carbon-based support layer 1.

[0023] Reference Figure 3 and Figure 4As shown in this embodiment: the diameter of the gas guiding channel 5 is 2-5mm, and the spacing between adjacent gas guiding channels is 5-10mm. By setting the structure of the gas guiding channel 5, ozone can be guided to be evenly distributed inside the packing, avoiding uneven ozone distribution. At the same time, the hydrophilic silica coating 6 coated on the inner wall can enhance the affinity of the packing for water molecules, allowing ozone, water and organic matter to better contact and react on the surface of the packing.

[0024] Reference Figure 3 As shown in this embodiment, the peak height of the corrugated structure 7 is 1-3 mm and the trough depth is 0.5-2 mm. By setting the peak height of the corrugated structure 7 to 1-3 mm, the specific surface area and roughness of the filler are further increased, which is beneficial to the adsorption and diffusion of ozone. At the same time, it can also enhance the turbulence of the water flow and promote the full mixing and reaction of ozone with organic matter.

[0025] Reference Figure 1 and Figure 4 As shown in this embodiment: the reinforcing mesh plate 8 is made of stainless steel, and the diameter of the through hole 9 is 3-6mm. By setting the structure of the reinforcing mesh plate 8 and the through hole 9, the overall strength and stability of the packing can be improved, preventing the packing from breaking and deforming during use, and extending the service life of the packing. The through hole 9 on the reinforcing mesh plate 8 can ensure the smooth passage of water flow and ozone without affecting the normal use of the packing.

[0026] Reference Figure 2 As shown in this embodiment: the transition metal elemental particles 4 are cobalt particles with a particle size of 0.01-0.05 mm. By using cobalt particles with a particle size of 0.01-0.05 mm, the cobalt particles have good catalytic activity. The appropriate particle size allows them to be uniformly loaded on the carbon nanofiber layer, forming a stronger synergistic catalytic effect with the metal oxide active coating 2, further improving the efficiency of ozone catalytic oxidation reaction and enhancing the removal effect of organic matter in wastewater.

[0027] Working Principle: The user utilizes honeycomb activated carbon as the carbon-based carrier layer 1. Its unique honeycomb structure provides a large specific surface area, offering ample adsorption space and increasing the contact area between ozone and the carbon-based carrier layer 1. This facilitates ozone adsorption and catalytic reactions. The metal oxide active coating 2 loaded on the inner wall of the honeycomb channels, along with the synergistic effect of titanium dioxide and ferric oxide, effectively enhances the catalytic decomposition of ozone, generating more hydroxyl radicals and strengthening the oxidative degradation of organic matter. By setting the thickness of the nanofiber carbon layer 3 to 0.1-0.3 mm, the specific surface area is further increased. Furthermore, the transition metal particles 4 loaded on it can form a synergistic catalytic effect with the metal oxide active coating 2, improving the efficiency of the catalytic reaction. The mesh structure of the nanofiber carbon layer 3 also acts as a filter, intercepting some impurities in wastewater and preventing them from clogging the pores of the carbon-based carrier layer 1. The gas flow channel 5 guides ozone to distribute evenly within the packing material, preventing uneven ozone distribution. Meanwhile, the hydrophilic silica coating 6 on the inner wall enhances the affinity of the packing material for water molecules, allowing ozone, water, and organic matter to better contact and react on the packing surface. By setting the corrugated structure 7 with a peak height of 1-3mm, the specific surface area and roughness of the packing material are further increased, which is beneficial for ozone adsorption and diffusion. At the same time, it can also enhance the turbulence of water flow, promoting the full mixing and reaction of ozone and organic matter. By setting the structure of reinforcing mesh plate 8 and through holes 9, the overall strength and stability of the packing material can be improved, preventing the packing material from breaking and deforming during use, and extending the service life of the packing material. The through holes 9 on the reinforcing mesh plate 8 can ensure the smooth passage of water and ozone without affecting the normal use of the packing material. The transition metal elemental particles 4 are cobalt particles with a particle size of 0.01-0.05mm. Cobalt particles have good catalytic activity, and the appropriate particle size can make them uniformly loaded on the nanofiber carbon fiber layer, forming a stronger synergistic catalytic effect with the metal oxide active coating 2, further improving the efficiency of ozone catalytic oxidation reaction and enhancing the removal effect of organic matter in wastewater.

[0028] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A carbon-based packing material for ozone catalytic oxidation, characterized in that, The carbon-based carrier layer (1) is made of honeycomb activated carbon and each honeycomb channel has a metal oxide active coating (2) loaded on its inner wall. The metal oxide active coating (2) is composed of titanium dioxide and ferric oxide mixed in a mass ratio of 2:

1. The surface of the carbon-based carrier layer (1) is provided with a mesh-distributed nanofiber layer (3). The nanofiber layer (3) is loaded with transition metal elemental particles (4). The interior of the carbon-based carrier layer (1) is provided with several through gas guiding channels (5). The inner wall of the gas guiding channel (5) is coated with a hydrophilic silica coating (6). The outer surface of the carbon-based carrier layer (1) is provided with an uneven corrugated structure (7). The top and bottom of the carbon-based carrier layer (1) are provided with reinforcing mesh plates (8). The reinforcing mesh plates (8) are provided with several uniformly distributed through holes (9).

2. The ozone catalytic oxidation carbon-based packing material according to claim 1, characterized in that: The thickness of the nanofiber layer (3) is 0.1-0.3 mm.

3. The ozone catalytic oxidation carbon-based packing material according to claim 1, characterized in that: The diameter of the gas guide channel (5) is 2-5 mm, and the spacing between adjacent gas guide channels is 5-10 mm.

4. The ozone catalytic oxidation carbon-based packing material according to claim 1, characterized in that: The corrugated structure (7) has a peak height of 1-3 mm and a trough depth of 0.5-2 mm.

5. The ozone catalytic oxidation carbon-based packing material according to claim 1, characterized in that: The reinforcing mesh plate (8) is made of stainless steel, and the diameter of the through hole (9) is 3-6 mm.

6. The ozone catalytic oxidation carbon-based packing material according to claim 1, characterized in that: The thickness of the metal oxide active coating (2) is 0.05-0.15 mm.

7. The ozone catalytic oxidation carbon-based packing material according to claim 1, characterized in that: The transition metal particles (4) are cobalt particles with a particle size of 0.01-0.05 mm.

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