MBBR packing agitator with hydrocyclone

Abstract

This utility model relates to a hydrocyclone for mixing MBBR packing material, characterized by comprising: a circular base, a water-distributing cone fixedly installed at the center of the circular base, guide plates fixedly installed on the circular base and evenly distributed around the water-distributing cone, a pressure cover plate with a central hole covering the guide plates and fixed together with them, and an inlet pipe fixedly connected to the pressure cover plate and communicating with the central hole. The center of the inlet pipe is directly opposite the apex of the water-distributing cone. The cross-section of the guide plates is airfoil-shaped, and each guide plate is arranged such that the inner end of the airfoil lies on a circle centered at the center of the circular base, and the outer end coincides with the outer edge of the circular base. This allows water from the inlet pipe to be evenly distributed through the water-distributing cone to the gaps between adjacent guide plates, ultimately forming a swirling flow.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment equipment, and in particular to an MBBR packing mixing hydrocyclone. Background Technology

[0002] Currently, the MBBR process is mature and its wastewater treatment effect is stable. However, during use, a stirring device is usually installed in the anaerobic tank to agitate the wastewater, thereby improving the fluidization effect of the wastewater in the anaerobic tank. Existing stirring devices generally use mechanical stirring devices with stirring blades. The stirring blades are placed directly in the anaerobic tank. When started, the stirring blades will produce a large amount of shaking in the wastewater. Furthermore, if the stirring blades rotate too fast, they will collide with the suspended media in the wastewater, which can easily damage the suspended media, causing the microorganisms on the media to fall off and affecting the wastewater treatment effect. If the stirring blades rotate too slowly, the shear force formed by the stirring blades in the wastewater will be too small, thus affecting the fluidization effect of the wastewater in the anaerobic tank. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this invention provides an advantageous MBBR packing mixing hydrocyclone.

[0004] To achieve the above objectives, this utility model provides an MBBR packing mixing hydrocyclone, which includes a circular base, a water-distributing cone fixedly installed at the center of the circular base, guide plates fixedly installed on the circular base and evenly distributed around the water-distributing cone, a pressure cover plate with a central hole covering the guide plates and fixed together with them, and a water inlet pipe fixedly connected to the pressure cover plate and communicating with the central hole. The center of the water inlet pipe is directly opposite the apex of the water-distributing cone. The cross-section of the guide plates is airfoil-shaped, and each of the guide plates is arranged such that the inner end of the airfoil is located on a circle with the center of the circular base as the center, and the outer end coincides with the outer edge of the circular base. This allows the water flow from the water inlet pipe to be evenly distributed through the water-distributing cone to the gap between each pair of adjacent guide plates and finally forming a swirling flow.

[0005] A further technical feature of this utility model is: The cross-section of the deflector is airfoil-shaped, meaning that the inner side is a concave curve and the outer side is a convex curve. The inner concave curve and the outer convex curve intersect at one end and are connected by a smooth arc curve at the other end. The center of the smooth arc curve is the inner end of the airfoil, and the intersection point of the inner concave curve and the outer convex curve is the outer end of the airfoil.

[0006] The number of the deflectors is set to 5 or 6, and the line connecting the outer end and the inner end of the airfoil cross section of each deflector is extended to form a regular pentagon or a regular hexagon.

[0007] The circular base, the water-distributing cone, the guide plate, the pressure cover plate, and the water inlet pipe are an integral structure.

[0008] The beneficial effects of this utility model are: Because this invention transforms mechanical stirring into hydraulic stirring, the raw water, after being pressurized, enters the water-distributing cone between the pressure cover plate and the circular base through the inlet pipe. The water-distributing cone evenly distributes the water flow, and then it flows out in a swirling flow from the gaps between the guide plates. This changes the direction of the water flow, forming a swirling water body that hydraulically mixes the MBBR packing material in the water. This hydraulic mixing is more moderate in intensity than mechanical stirring, and it is less likely to damage the suspended packing material, thus preventing the shedding of microorganisms from the packing material and affecting the wastewater treatment effect. At the same time, this hydraulic mixing can also maintain the fluidization effect of the wastewater in the anaerobic tank. Using this invention, a carbon source can also be added to the inlet pipe to meet the carbon source requirements during the denitrification process. The effective mixing of the MBBR packing material under the action of the hydrocyclone can improve the denitrification reaction, and the overall hydraulic stirring reduces the production of dissolved oxygen, ensuring the anoxic environment for denitrification. Attached Figure Description

[0009] The structure of this utility model will be better understood from the following description taken in conjunction with the accompanying drawings, wherein the same reference numerals identify the same elements: Figure 1 This is a perspective view of the first embodiment of the present utility model; Figure 2 yes Figure 1 A 3D view after removing the pressure cover and water inlet pipe; Figure 3 yes Figure 2 Top view; Figure 4 This is a top view of the second embodiment of the present invention after removing the pressure cover and the water inlet pipe. Detailed Implementation

[0010] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.

[0011] like Figures 1-3As shown, an MBBR packing mixing hydrocyclone according to a specific embodiment of the present invention includes a circular base 1, a water-equalizing cone 2 fixedly installed at the center of the circular base, a guide plate 3 fixedly installed on the circular base 1 and evenly distributed around the water-equalizing cone 2, a pressure cover plate 4 with a central hole covering the guide plate and fixed together with the guide plate, and a water inlet pipe 5 fixedly connected to the pressure cover plate 4 and communicating with the central hole. The center of the water inlet pipe 5 is directly opposite the cone apex of the water-equalizing cone 2. The cross-section of the guide plate 3 is airfoil-shaped, and each of the guide plates 3 is arranged such that the inner end of the airfoil is located on a circle with the center of the circular base 1 as the center, and the outer end of the airfoil coincides with the outer edge of the circular base 1. The water flow from the water inlet pipe is evenly distributed through the water-equalizing cone to the gap between each two adjacent guide plates and finally forms a swirling flow. The cross-section of the guide plate 3 is airfoil-shaped, meaning that the inner side is a concave curve and the outer side is a convex curve. The inner concave curve and the outer convex curve intersect at one end and are connected by a smooth arc curve at the other end. The center of the smooth arc curve is the inner end of the airfoil, and the intersection point of the inner concave curve and the outer convex curve is the outer end of the airfoil.

[0012] In this embodiment, the number of the air deflectors 3 is set to 5, and the line connecting the outer end and the inner end of the cross-sectional airfoil of each air deflector 3 is extended to form a regular pentagon.

[0013] Figure 4 This is a top view of the second embodiment of the present invention after removing the pressure cover plate 4 and the water inlet pipe 5. In this embodiment, the number of guide plates 3 is set to 6, and the line connecting the outer end and the inner end of the airfoil of each guide plate 3 cross section is extended to form a regular hexagon. Other structures are the same as in the first embodiment.

[0014] In practical applications, the circular base, the water-distributing cone, the guide plate, the pressure cover plate, and the water inlet pipe can also be configured as an integral structure.

[0015] Because this invention transforms mechanical stirring into hydraulic stirring, the raw water, after being pressurized, enters the water-distributing cone 2 between the pressure cover plate 4 and the circular base 1 through the inlet pipe 5. The water-distributing cone 2 evenly distributes the water flow, and then it flows out in a swirling flow from the gaps between the guide plates 3. This changes the direction of the water flow, forming a swirling water body, which hydraulically mixes the MBBR packing material in the water. This hydraulic mixing is more moderate in intensity than mechanical stirring, and it is less likely to damage the suspended packing material, thus preventing the shedding of microorganisms from the packing material and affecting the wastewater treatment effect. At the same time, this hydraulic mixing can also maintain the fluidization effect of the wastewater in the anaerobic tank. Using this invention, a carbon source can also be added to the inlet pipe 5 to meet the carbon source requirements during the denitrification process. The effective mixing of the MBBR packing material under the action of the hydrocyclone can improve the denitrification reaction, and the overall hydraulic stirring reduces the production of dissolved oxygen, ensuring the anoxic environment for denitrification.

[0016] The technical content and features of this utility model have been disclosed above. However, it is understood that, under the inventive concept of this utility model, those skilled in the art can make various changes and improvements to the above structure, including combinations of the technical features disclosed or claimed herein, as well as other combinations that explicitly include these features. All such modifications and / or combinations fall within the technical field to which this utility model pertains and are within the protection scope of the claims of this utility model.

Claims

1. A hydrocyclone for mixing MBBR packing material, characterized in that... include: The system comprises a circular base, a water-distributing cone fixedly installed at the center of the circular base, guide plates fixedly installed on the circular base and evenly distributed around the water-distributing cone, a pressure cover plate with a central hole covering the guide plates and fixed together with them, and an inlet pipe fixedly connected to the pressure cover plate and communicating with the central hole. The center of the inlet pipe is directly opposite the apex of the water-distributing cone. The cross-section of the guide plates is airfoil-shaped, and each guide plate is arranged such that the inner end of the airfoil is located on a circle centered at the center of the circular base, and the outer end coincides with the outer edge of the circular base. This allows the water flow from the inlet pipe to be evenly distributed through the water-distributing cone to the gap between each pair of adjacent guide plates and finally forming a swirling flow.

2. The MBBR packing agitator hydrocyclone as described in claim 1, characterized in that... The cross-section of the deflector is airfoil-shaped, meaning that the inner side is a concave curve and the outer side is a convex curve. The inner concave curve and the outer convex curve intersect at one end and are connected by a smooth arc curve at the other end. The center of the smooth arc curve is the inner end of the airfoil, and the intersection point of the inner concave curve and the outer convex curve is the outer end of the airfoil.

3. The MBBR packing mixing hydrocyclone as described in claim 1 or claim 2, characterized in that... The number of the deflectors is set to 5 or 6, and the line connecting the outer end and the inner end of the cross-sectional airfoil of each deflector forms a regular pentagon or a regular hexagon after extension.

4. The MBBR packing mixing hydrocyclone as described in claim 3, characterized in that... The circular base, the water-distributing cone, the guide plate, the pressure cover plate, and the water inlet pipe are an integral structure.

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