Active carbon adsorption tower and biological filter combined VOCs treatment device

Abstract

The utility model relates to the technical field of VOCs (volatile organic compounds) treatment devices, and discloses an activated carbon adsorption tower and biological filter combined VOCs treatment device which comprises a base, an activated carbon adsorption tower is mounted on the left side of the upper surface of the base, a first activated carbon adsorption plate is mounted in an inner cavity of the activated carbon adsorption tower, and a conveying pipe is mounted at the top end of the activated carbon adsorption tower; the treatment box is arranged in the middle of the upper surface of the base, and the bottom end of the conveying pipe is connected with an inner cavity of the treatment box; vOCs in waste gas can be efficiently captured through the activated carbon adsorption tower, the waste gas can be uniformly guided to the surface of the filler layer through the flow dividing pipe, so that microbial communities in the biological filter can uniformly degrade organic substances which are difficult to adsorb, and the device is compact in structure, simple and convenient to operate, suitable for VOCs treatment of small and medium-sized enterprises and high in practicability. Meanwhile, the operation cost is reduced, the risk of secondary pollution is reduced, and the overall purification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of VOCs treatment devices, in particular to a combined VOCs treatment device of an activated carbon adsorption tower and a biological filter tank. Background Technique

[0002] The basic function of a VOCs treatment device is to remove harmful gases in industrial emissions to reduce the impact on the environment and human health. These devices are crucial for meeting environmental protection standards, preventing air pollution, and improving air quality.

[0003] Common VOCs treatment devices generally use an activated carbon adsorption tower to treat VOCs. The gas is driven by a fan to pass through a tower body filled with activated carbon, and the VOCs will be captured by the pores of the activated carbon. The porous structure of the activated carbon is used to adsorb the VOCs, thereby treating the VOCs.

[0004] However, due to the unique chemical properties of some substances in VOCs, they are difficult to be effectively adsorbed by activated carbon. The substances in VOCs usually have a low saturation vapor pressure or a high boiling point, and the intermolecular force is too strong, which is not conducive to adsorption, resulting in the escape of some VOCs; in addition, the activated carbon is easily saturated with adsorption, and some VOCs will escape through the activated carbon, generating secondary pollution and causing the tail gas to exceed the standard. Industrially, the combination of activated carbon adsorption and catalytic oxidation, plasma and other technologies is often used to achieve the secondary treatment of substances that are difficult to adsorb in the waste gas, but there are problems such as complex operation and high initial investment cost of equipment, which are not suitable for the high-efficiency and low-cost treatment needs of small and medium-sized enterprises for VOCs. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a combined VOCs treatment device of an activated carbon adsorption tower and a biological filter tank to solve the problems of limited adsorption effect of activated carbon, easy generation of secondary pollution, and high equipment investment and operation costs in the existing combined technologies as mentioned in the above background technique.

[0007] (2) Technical Solution

[0008] To achieve the above object, the utility model provides the following technical solution: A combined VOCs treatment device of an activated carbon adsorption tower and a biological filter tank, including:

[0009] A base, on the upper surface of the left side of the base, an activated carbon adsorption tower is installed. Inside the cavity of the activated carbon adsorption tower, a first activated carbon adsorption plate is installed. At the top of the activated carbon adsorption tower, a delivery pipe is installed.

[0010] The treatment tank is arranged in the middle of the upper surface of the base, and the bottom end of the conveying pipe is connected to the inner cavity of the treatment tank;

[0011] The biological filter tank housing is arranged on the right side of the upper surface of the base. The inner cavity of the biological filter tank housing is evenly installed with filter media plates, and packing layers are placed on the upper surfaces of the filter media plates;

[0012] The flow splitting plate is arranged below the filter media plate. The flow splitting plates are all installed on the inner wall of the biological filter tank housing. The upper surface of the flow splitting plate is evenly provided with flow splitting holes, and flow splitting pipes are installed on the surfaces of the flow splitting plates. The flow splitting pipes all penetrate through the biological filter tank housing and are connected to the inner cavity of the treatment tank.

[0013] Preferably, a second activated carbon adsorption plate is inserted into the inner cavity of the treatment tank. A sealing plate is installed on the upper surface of the second activated carbon adsorption plate. The second activated carbon adsorption plate can adsorb the residual VOCs in the conveying pipe.

[0014] Preferably, limiting tracks are installed on both sides of the inner cavity of the treatment tank. The second activated carbon adsorption plates are inserted into the inner cavities of the limiting tracks. The limiting tracks enable the second activated carbon adsorption plates to be stably installed in the inner cavity of the treatment tank, and at the same time, can also seal the two sides of the second activated carbon adsorption plates.

[0015] Preferably, a sealing edge is installed on the upper surface of the treatment tank. The sealing edge is designed in a loop shape, and the sealing plate is embedded in the inner cavity of the sealing edge. The sealing edge can seal the sealing plate, so as to seal the opening part where the second activated carbon adsorption plate is inserted into the treatment tank.

[0016] Preferably, a handle is installed on the upper surface of the sealing plate, and a sealing cushion layer is installed on the surface of the sealing plate. The sealing plate is in close contact with the inner wall of the sealing edge, further improving the sealing effect on the sealing plate. The second activated carbon adsorption plate can be conveniently withdrawn from the treatment tank through the handle.

[0017] Preferably, threaded rods are rotatably connected to the four corners of the upper surface of the sealing plate, and the lower parts of the threaded rods are rotatably connected to the surface of the treatment tank. By removing the threaded rods from the surface of the sealing plate, the second activated carbon adsorption plate can be disassembled, which is convenient for cleaning the second activated carbon adsorption plate.

[0018] Advantageous Effects

[0019] Compared with the prior art, the present utility model provides a combined VOCs treatment device of an activated carbon adsorption tower and a biological filter tank, having the following advantageous effects:

[0020] The combined activated carbon adsorption tower and biological filter VOCs treatment device can efficiently capture VOCs in the waste gas through the activated carbon adsorption tower. The conveying pipe can inject the filtered waste gas into the biological filter housing. Through the shunt pipe, the waste gas can be injected below the packing layer and evenly diverted to the surface of the packing layer via the shunt pipe, enabling the microbial community in the biological filter to uniformly degrade the organic substances that are difficult to adsorb. By connecting the activated carbon adsorption tower and the biological filter in series, double purification of VOCs is achieved. Moreover, the device has a compact structure, is easy to operate, is suitable for VOCs treatment in small and medium-sized enterprises, reduces the operating cost, reduces the risk of secondary pollution, and improves the overall purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present utility model;

[0022] Figure 2 is a schematic connection structure diagram of the biological filter housing and the treatment box of the present utility model;

[0023] Figure 3 is a schematic cross-sectional structure diagram of the biological filter housing of the present utility model;

[0024] Figure 4 is a schematic cross-sectional structure diagram of the treatment box of the present utility model;

[0025] Figure 5 is a schematic cross-sectional structure diagram of the activated carbon adsorption tower of the present utility model;

[0026] Figure 6 is a schematic structure diagram of the shunt plate of the present utility model.

[0027] In the figure: 1, base; 2, activated carbon adsorption tower; 3, first activated carbon adsorption plate; 4, conveying pipe; 5, treatment box; 6, biological filter housing; 7, shunt pipe; 8, filter plate; 9, packing layer; 10, shunt plate; 11, shunt hole; 12, second activated carbon adsorption plate; 13, sealing plate; 14, limiting track; 15, sealing edge; 16, handle; 17, threaded rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] The present utility model provides a technical solution, a combined activated carbon adsorption tower and biological filter VOCs treatment device. Please refer toFigure 1 , including a base 1, on the left side of the upper surface of the base 1, an activated carbon adsorption tower 2 is installed. Please refer to Figure 5 , in the inner cavity of the activated carbon adsorption tower 2, a first activated carbon adsorption plate 3 is installed. Please refer to Figure 1 , at the top of the activated carbon adsorption tower 2, a delivery pipe 4 is installed;

[0030] A treatment tank 5 is arranged in the middle of the upper surface of the base 1, and the bottom end of the delivery pipe 4 is connected to the inner cavity of the treatment tank 5;

[0031] A biological filter housing 6 is arranged on the right side of the upper surface of the base 1. Please refer to Figure 3 , in the inner cavity of the biological filter housing 6, filter plates 8 are evenly installed, and packing layers 9 are placed on the upper surfaces of the filter plates 8;

[0032] A flow splitting plate 10 is arranged below the filter plates 8, and the flow splitting plates 10 are all installed on the inner wall of the biological filter housing 6. Please refer to Figure 6 , on the upper surface of the flow splitting plate 10, flow splitting holes 11 are evenly opened. Please refer to Figure 2 , on the surface of the flow splitting plate 10, flow splitting pipes 7 are all installed, and the flow splitting pipes 7 all penetrate through the biological filter housing 6 and are connected to the inner cavity of the treatment tank 5;

[0033] Through the activated carbon adsorption tower 2, VOCs in the waste gas can be efficiently captured. The delivery pipe 4 can inject the filtered waste gas into the biological filter housing 6. Through the flow splitting pipes 7, the waste gas can be injected below the packing layer 9, and through the flow splitting pipes 7, the waste gas can be evenly diverted to the surface of the packing layer 9, enabling the microbial community in the biological filter to uniformly degrade the organic substances that are difficult to adsorb. By connecting the activated carbon adsorption tower 2 and the biological filter in series, dual purification of VOCs is achieved, and the device has a compact structure, simple operation, is suitable for VOC treatment in small and medium-sized enterprises, reduces the operating cost at the same time, reduces the risk of secondary pollution, and improves the overall purification efficiency.

[0034] Please refer to Figure 4 , in the inner cavity of the treatment tank 5, a second activated carbon adsorption plate 12 is inserted. On the upper surface of the second activated carbon adsorption plate 12, a sealing plate 13 is installed, and the second activated carbon adsorption plate 12 can adsorb the residual VOCs in the delivery pipe 4.

[0035] On both sides of the inner cavity of the treatment tank 5, limiting tracks 14 are installed, and the second activated carbon adsorption plates 12 are all inserted into the inner cavities of the limiting tracks 14. The limiting tracks 14 enable the second activated carbon adsorption plates 12 to be stably installed in the inner cavity of the treatment tank 5, and at the same time, can also seal the two sides of the second activated carbon adsorption plates 12.

[0036] The upper surface of the treatment box 5 is equipped with a sealing edge 15. The sealing edge 15 is designed in a loop shape. The sealing plate 13 is embedded in the inner cavity of the sealing edge 15. The sealing edge 15 can seal the sealing plate 13, thereby sealing the opening part where the second activated carbon adsorption plate 12 is inserted into the treatment box 5.

[0037] A handle 16 is installed on the upper surface of the sealing plate 13. A sealing cushion layer is installed on the surface of the sealing plate 13. The sealing plate 13 is in close contact with the inner wall of the sealing edge 15, further improving the sealing effect of the sealing plate 13. The second activated carbon adsorption plate 12 can be conveniently withdrawn from the treatment box 5 through the handle 16.

[0038] Threaded rods 17 are screwed at the four corners of the upper surface of the sealing plate 13. The lower parts of the threaded rods 17 are screwed on the surface of the treatment box 5. By removing the threaded rods 17 from the surface of the sealing plate 13, the second activated carbon adsorption plate 12 can be disassembled, facilitating the cleaning of the second activated carbon adsorption plate 12.

[0039] First, the activated carbon adsorption tower 2 of this device can efficiently capture VOCs in the waste gas. The conveying pipe 4 can inject the waste gas into the treatment box 5. The second activated carbon adsorption plate 12 can adsorb the residual VOCs in the conveying pipe 4. The shunt pipe 7 can inject the waste gas below the packing layer 9, and then the shunt pipe 7 can evenly divert the waste gas to the surface of the packing layer 9, enabling the microbial community in the biological filter to evenly degrade the organic substances that are difficult to adsorb. By connecting the activated carbon adsorption tower 2 and the biological filter in series, double purification of VOCs is achieved. Moreover, the device has a compact structure, is easy to operate, is suitable for VOC treatment in small and medium-sized enterprises, reduces the operating cost at the same time, reduces the risk of secondary pollution, improves the overall purification efficiency. Finally, the threaded rods 17 are removed from the surface of the sealing plate 13, and the second activated carbon adsorption plate 12 can be conveniently withdrawn from the treatment box 5 through the handle 16, facilitating the cleaning of the second activated carbon adsorption plate 12.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A VOCs treatment device combining an activated carbon adsorption tower and a biological filter, characterized in that: include: A base (1), an activated carbon adsorption tower (2) is installed on the left side of the upper surface of the base (1), a first activated carbon adsorption plate (3) is installed in the inner cavity of the activated carbon adsorption tower (2), and a conveying pipe (4) is installed at the top of the activated carbon adsorption tower (2); A processing box (5) is arranged in the middle of the upper surface of the base (1), and the bottom end of the delivery pipe (4) is connected to the inner cavity of the processing box (5); The biological filter housing (6) is arranged on the right side of the upper surface of the base (1), the inner cavity of the biological filter housing (6) is evenly installed with filter plates (8), and the upper surface of the filter plates (8) is evenly placed with a filler layer (9); The diverter plate (10) is arranged below the filter plate (8), and the diverter plate (10) is installed on the inner wall of the biological filter housing (6). The upper surface of the diverter plate (10) is evenly provided with diverter holes (11). The surface of the diverter plate (10) is installed with a diverter pipe (7), and the diverter pipe (7) passes through the biological filter housing (6) and is connected to the inner cavity of the treatment box (5).

2. The VOCs treatment device combined with an activated carbon adsorption tower and a biological filter according to claim 1 is characterized in that: A second activated carbon adsorption plate (12) is inserted into the inner cavity of the processing box (5), and a sealing plate (13) is installed on the upper surface of the second activated carbon adsorption plate (12).

3. The VOCs treatment device combined with an activated carbon adsorption tower and a biological filter according to claim 2 is characterized in that: Limiting rails (14) are installed on both sides of the inner cavity of the processing box (5), and the second activated carbon adsorption plates (12) are inserted into the inner cavity of the limiting rails (14).

4. The VOCs treatment device combined with an activated carbon adsorption tower and a biological filter according to claim 2 is characterized in that: A sealing edge (15) is installed on the upper surface of the processing box (5); the sealing edge (15) is of a circular shape, and the sealing plate (13) is embedded in the inner cavity of the sealing edge (15).

5. The VOCs treatment device combined with an activated carbon adsorption tower and a biological filter according to claim 4 is characterized in that: A handle (16) is installed on the upper surface of the sealing plate (13), a sealing pad layer is installed on the surface of the sealing plate (13), and the sealing plate (13) is in close contact with the inner wall of the sealing edge (15).

6. The VOCs treatment device combined with an activated carbon adsorption tower and a biological filter according to claim 2 is characterized in that: Threaded rods (17) are screwed to the four corners of the upper surface of the sealing plate (13), and the lower parts of the threaded rods (17) are screwed to the surface of the processing box (5).

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