Microchannel reaction structure for microbial sewage treatment

Abstract

The invention relates to the technical field of reaction equipment, in particular to a microchannel reaction structure for microbial sewage treatment, which comprises a shell, a material inlet, a material outlet, a channel connecting structure, a reaction channel and porous carrier straight ribs. The shell is cylindrical and contains all other structures, one end of the shell is provided with a material inlet, and the other end of the shell is provided with a material outlet. And the channel connecting structure is arranged at the material inlet and the material outlet, and can be connected with another micro-channel to lengthen or change the overall shape of the channel so as to adapt to different working environments. The reaction channels are located in the shell, and one micro-channel reaction structure comprises 21 reaction channels which are uniformly distributed. And the porous carrier straight ribs are positioned in the reaction channel, are hollow, are densely provided with circular pores, are positioned in a concentric position with the reaction channel, and are connected with the corners of the reaction channel so as to be in a suspended state in the channel. The pores are additionally formed in the traditional straight ribs for the first time, all functions of the traditional straight ribs are reserved, the attachment area of microorganisms is greatly increased, and the situation that the center of fluid cannot make contact with the microorganisms is avoided by fully enlarging the inner surface space of the reaction channel. The area of the contact wall surface in the unit liquid holdup is increased, and the turbulent flow effect is improved, so that the improvement of the microbial sewage treatment efficiency is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of reaction equipment, and specifically to a microchannel reaction structure for microbial sewage treatment. Background Art

[0002] Currently, there are several commercial microchannel reaction structures, but most of them are flat plate type, such as the relatively classic "heart-shaped" channel structure, zigzag type, and "umbrella-shaped", etc. Although the pressure drop of these flow channels is small, their mass transfer effect is weak; the contact area between the fluid and the wall remains unchanged, and the degree of efficiency improvement is insufficient; the flat plate reaction channels can only be arranged in a two-dimensional space, which has certain limitations.

[0003] Therefore, it is necessary to develop a microchannel reaction structure with good mass transfer effect, larger contact area between the channel and the fluid, and more application scenarios. Summary of the Invention

[0004] Therefore, the present invention is made in view of the above problems. By adding a straight rib in the reaction channel, adopting a 90° corner design at the end of the channel, and adding a channel connection structure at the material inlet and material outlet, the problems of insufficient existing contact area and application scenario limitations are solved.

[0005] The present invention realizes the above object through the following technical solutions: A microchannel reaction structure for microbial sewage treatment, the structure includes: a housing, a material inlet, a material outlet, a channel connection structure, a reaction channel, and a porous carrier straight rib. The housing is in a cylindrical shape, with a diameter of 16 mm and a length of 100 mm. The housing contains all other structures. One end of the housing is provided with a material inlet and the other end is provided with a material outlet. The channel connection structure is arranged at the material inlet and the material outlet, and can be connected to another microchannel for lengthening or changing the overall shape structure of the channel to adapt to different working environments. The reaction channel is located inside the housing. A microchannel reaction structure contains 21 reaction channels with a diameter of 2 mm and is evenly distributed. The porous carrier straight rib is located inside the reaction channel, with a diameter of 0.6 mm, a wall thickness of 0.1 mm, and is concentric with the reaction channel, and is connected to the corner of the reaction channel to be in a suspended state inside the channel.

[0006] Preferably, the end of the housing adopts a 90° corner design. There are three types of corner orientations at both ends, one is in the same direction, one is in the opposite direction, and one is at a 90° angle.

[0007] Preferably, a channel connection structure is arranged at the material inlet and the material outlet, and after being precisely fitted with another microchannel, it is fixed by 4 screws.

[0008] Preferably, the cross-section of the reaction channel is circular, and there are 21 in total, evenly distributed in the microchannel.

[0009] Preferably, a porous carrier straight rib is added in the reaction channel. The addition of the porous design on the basis of the traditional straight rib not only retains all the functions of the traditional straight rib, but also greatly increases the attachment area of microorganisms and improves the mass transfer effect of the channel. The connection of both ends of the straight rib to the wall surface at the 90° corner solves the problem of the suspension of the porous carrier straight rib.

[0010] The beneficial effects are as follows: By adding a porous carrier straight rib in the reaction channel with a circular cross-section, the contact area between microorganisms and fluid during sewage treatment and the mass transfer effect are greatly increased. The design of a 90° corner at the end of the channel enhances the disturbance of the fluid in the channel, making the distribution of pollutants in the fluid more balanced. Not only is the pressure drop in the flow channel greatly reduced, but also the sewage treatment efficiency of microorganisms is greatly enhanced, effectively solving the problems of the current reaction channel.

[0011] In the present invention, through the 90° corner design at the end of the channel and the addition of channel connection structures at the material inlet and material outlet, the morphological changes of the microchannel structure in three-dimensional space are realized. The structure is more complex and changeable, and is also applicable to more complex situations. It has a wider application range and a brighter development prospect compared with the two-dimensional flat channel. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the outer shell of the present invention.

[0013] Figure 2 It is a schematic diagram of the material inlet of the present invention.

[0014] Figure 3 It is a schematic diagram of the material outlet of the present invention.

[0015] Figure 4 It is a schematic diagram of the reaction channel of the present invention.

[0016] Figure 5 It is a schematic diagram of the channel connection structure of the present invention.

[0017] Figure 6 It is a schematic diagram of the porous carrier straight rib of the present invention.

[0018] Figure 7 It is a schematic diagram of the overall structure of the co-directional microchannel of the present invention.

[0019] Figure 8 It is a schematic diagram of the overall structure of the 90°-direction microchannel of the present invention.

[0020] Figure 9 It is a schematic diagram of the overall structure of the counter-directional microchannel of the present invention.

[0021] Figure 10 It is a schematic diagram of the connection between the straight rib and the wall surface at the 90° corner of the present invention.

[0022] Figure 11 This is a schematic diagram of the overall shape of the channel connection of the present invention. Embodiment

[0023] Preferred embodiments of the invention will be described in detail with reference to the accompanying drawings, so that those of ordinary skill in the art in the prior art to which the invention pertains can easily implement these embodiments. However, the present invention can be implemented in various different forms, so the present invention is not limited to the embodiments described below; in addition, in order to more clearly describe the present invention and show the position of each component, the components not introduced are shown in the form of a wireframe diagram.

[0024] As Figures 1-6 As shown, a microchannel reaction structure for microbial sewage treatment includes: a housing 1, a material inlet 2, a material outlet 3, a channel connection structure 4, a reaction channel 5, and a porous carrier straight rib 6.

[0025] The housing 1 is in a cylindrical shape, no different from the common pipeline shape, and is simple and beautiful to manufacture. It has a 90° corner shape at the end, and the purpose is: by enhancing the disturbance of the fluid in the channel, making the distribution of pollutants in the fluid more balanced. Since it is a circular pipe, it is equivalent to making a fillet treatment, and the system stability is still good.

[0026] The reactant material flows in from the material inlet 2 and flows out from the material outlet 3 after being processed in the reaction channel.

[0027] The channel connection structure 4 is arranged at the material inlet 2 and the material outlet 3, and is precisely fitted with another microchannel and fixed by 4 screws.

[0028] Compared with several existing commercial microchannel reaction structures, the cross-section of the reaction channel 1 is circular. Although the porous carrier straight rib 6 inside it reduces the volume of the reaction channel 5 by a small amount, it is obviously more beneficial than harmful compared with the increased contact area. This is more conducive to the attachment, growth and reproduction of microorganisms in the microchannel, and increases the contact area with the fluid.

[0029] Compared with the two-dimensional flat plate channel, the 90° corner design at the end of our housing 1 can realize the morphological change of the microchannel structure in three-dimensional space. The structure is more complex and changeable, and is also applicable to more complex situations, with a wider scope of application and a brighter development prospect.

[0030] As Figures 7-9 As shown, there are three orientations of the 90° corner at the end of the channel. One is the same direction 7, one is the opposite direction 8, and one is a 90° angle 9.

[0031] As Figure 10As shown, the straight rib 6 of the porous carrier is connected to the 90° corner of the reaction channel 5, solving the problem of fixing the straight rib 6 of the porous carrier in a suspended state.

[0032] As Figure 11 shown, the overall schematic diagram of the channel connection makes the channel a three-dimensional structure, which is more convenient to meet the conditions required by the research.

[0033] The working principle of the present invention: First, a suitable pipeline path is built using three microchannels with different orientations of 90° corners according to the actual operating environment and fixed through the channel connection structure 4. Sewage flows in from the material inlet 2 and passes through the 90° corner to enhance fluid disturbance, making the pollutants more evenly distributed in the water; then it enters the reaction channel 5 and undergoes a series of chemical reactions with the microorganisms attached to the wall surface and the straight rib of the porous carrier, and finally flows out from the material outlet 3. The whole process ends.

Claims

1. A microchannel reaction structure for microbial sewage treatment, comprising: Shell (1), material inlet (2), material outlet (3), channel connection structure (4), reaction channel (5), porous carrier straight rib (6). The shell (1) is in a cylindrical shape and contains all other structures. One end of the shell (1) is provided with a material inlet (2) and the other end is provided with a material outlet (3). The channel connection structure (4) is arranged at the material inlet (2) and the material outlet (3) and can be connected to another microchannel to extend or change the overall shape of the channel to adapt to different working environments. The reaction channel (5) is located inside the shell. A microchannel reaction structure includes 21 reaction channels (5) and is evenly distributed. The porous carrier straight rib (6) is located inside the reaction channel (5). It is in a hollow shape, densely distributed with circular pores and is concentric with the reaction channel (5), and is connected to the corner of the reaction channel (5) to be in a suspended state inside the channel.

2. The microchannel reaction structure for microbial sewage treatment according to claim 1, wherein: The shell (1) is in a cylindrical shape, no different from the common pipe shape, and is simple and beautiful to manufacture.

3. The microchannel reaction structure for microbial sewage treatment according to claim 2, characterized in that: The shell (1) is in a 90° corner shape at the end, and its purpose is: By enhancing the disturbance of the fluid in the channel, the distribution of pollutants in the fluid is more balanced. Since it is a round pipe, it is equivalent to rounding, and the system stability is still good.

4. A microchannel reaction structure for microbial sewage treatment according to claim 1, characterized in that: The orientations of the material inlet (2) and the material outlet (3) are divided into three types. One is in the same direction, one is in the opposite direction, and one is at a 90° angle.

5. The microchannel reaction structure for microbial sewage treatment according to claim 3 or 4, characterized in that: The 90° corner design at the end of the shell (1) can realize the morphological change of the microchannel structure in three-dimensional space. The structure is more complex and changeable, and is also applicable to more complex situations. It has a wider application range and a brighter development prospect compared with the two-dimensional flat channel.

6. A microchannel reaction structure for microbial sewage treatment according to claim 1, characterized in that: The channel connection structure (4) is arranged at the material inlet (2) and the material outlet (3) and is fixed by 4 screws after being precisely fitted with another microchannel.

7. A microchannel reaction structure for microbial sewage treatment according to claim 1, characterized in that: The cross-section of the reaction channel (5) is circular with a diameter of 2 mm, which is more conducive to the attachment, growth and reproduction of microorganisms in the microchannel and increases the contact area with the fluid.

8. A microchannel reaction structure for microbial sewage treatment according to claim 1, characterized in that: The porous carrier straight rib (6) adds a porous setting in the case of a traditional straight rib. It can not only play a role in disturbing the flow after the fluid enters the reaction channel (5), but its porous design can also greatly increase the attachment and reproduction of microorganisms, greatly improving the sewage treatment efficiency.

9. The microchannel reaction structure for microbial sewage treatment according to claim 8, characterized in that: The porous carrier straight rib (6) is connected to the wall surface at the 90° corner of the reaction channel (5), solving the fixation problem of the porous carrier straight rib (6) in a suspended state.

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