Biofilm carrier for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a biofilm carrier for sewage treatment, which comprises a hollow cylinder (1) positioned in the center, an arc-shaped cylinder (2) positioned on the outermost layer and a plurality of groups of intermediate cylinders (3) positioned between the hollow cylinder (1) and the arc-shaped cylinder (2), and the plurality of groups of intermediate cylinders (3) are sequentially sleeved between the hollow cylinder (1) and the arc-shaped cylinder (2). Connecting plates are arranged on the adjacent hollow column bodies (1), the adjacent intermediate column bodies (3) and the adjacent arc-shaped column bodies (2), the connecting plates comprise main connecting plates (4) and auxiliary connecting plates (5), the main connecting plates (4) sequentially connect the intermediate column bodies (3) to the arc-shaped column bodies (2) from the hollow column bodies (1), and the auxiliary connecting plates (5) are used for connecting the two adjacent intermediate column bodies (3) or connecting the arc-shaped column bodies (2) and the adjacent intermediate column bodies (3) of the arc-shaped column bodies (2); the biofilm carrier is simple in structure, the specific surface area is greatly increased, and attachment, growth and rapid biofilm formation of microorganisms are facilitated; meanwhile, the overall structure is high in stability and not prone to loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a biofilm carrier used for sewage treatment. Background Art

[0002] In the treatment of urban sewage and industrial sewage, the commonly used biological treatment methods are activated sludge method and biofilm method. Among them, the biofilm method is a relatively active research topic in the field of sewage treatment. The biological moving bed sewage treatment method is more technologically advanced, with a BOD removal rate of more than 95%, a COD removal rate of more than 85%, and the function of phosphorus removal and nitrogen removal. The core technology of the biological moving bed sewage treatment process is the biofilm carrier.

[0003] There are many types of existing biofilm carriers, but the existing carriers have a small specific surface area due to the limitations of shape and structure, resulting in poor water treatment equipment with low load, general water treatment effect, and large floor space. Improved technology, such as the microbial carrier for sewage treatment with application number 201922460869.5, includes a right ball net, a left ball net, a positioning plate, a support spring, a limit ring, and a fixing plate. The right ball net is connected to the left ball net, the right ball net has a right mounting ring, the left ball net has a left mounting ring, the left mounting ring is connected to the right mounting ring, the limit plate is connected to the right mounting ring, the limit plate is stuck in the right mounting ring, the right side of the right mounting ring is connected to the limit ring, the limit ring has a plurality of limit convex rods, the limit convex rods pass through the right mounting ring, the limit plate, and the left mounting ring in sequence, and the outside of the limit ring has a plurality of fastening plates. Although it increases the specific surface area and stability of the carrier, it is not easy to loosen when used; but the structure is complex and the processing cost is high. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a biofilm carrier for sewage treatment, which has a simple structure, greatly improves the specific surface area, is easy for microorganisms to attach, grow and quickly form biofilms, and has low processing costs; at the same time, the overall structure is highly stable and not easy to loosen.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A biofilm carrier for sewage treatment comprises a hollow cylinder at the center, an outermost arc-shaped cylinder and a plurality of groups of inter-columns between the two. The groups of inter-columns are sequentially sleeved between the hollow cylinder and the arc-shaped cylinder. Adjacent hollow cylinders, inter-columns and arc-shaped cylinders are provided with connecting plates. The connecting plates comprise a main connecting plate and an auxiliary connecting plate. The main connecting plate sequentially connects the inter-columns from the hollow cylinder to the arc-shaped cylinder. The auxiliary connecting plate is used to connect two adjacent inter-columns or inter-columns adjacent to the arc-shaped cylinder to form a highly stable whole.

[0007] Preferably, the hollow cylinder is a hexagonal prism, and the main connecting plate is connected to the corners of the hollow cylinder.

[0008] Preferably, the main connecting plate, the auxiliary connecting plate, the hollow column and the intermediate column are all provided with a plurality of first ridges.

[0009] Preferably, the inner surface and the outer surface of the arc-shaped cylinder are alternately concave and convex.

[0010] Preferably, an auxiliary part is also included, which includes a central column and a plurality of supplementary plates connected to the central column and arranged along the circumference of the central column. The central column is inserted into the hollow column and connected with a nut head to fix the auxiliary part.

[0011] Preferably, a slot is provided on the supplementary plate to enable the supplementary plate to be inserted between the hollow cylinder, the intermediate cylinder and the arc cylinder.

[0012] Preferably, a slot matching the end of the supplementary plate is provided on the convex surface of the inner surface of the arc-shaped cylinder, so that when the central column is inserted into the hollow cylinder, the end of the supplementary plate is inserted into the slot.

[0013] Preferably, the supplementary plates are each provided with a plurality of second ridges.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The biofilm carrier of the utility model has a simple structure, greatly improves the specific surface area, is easy for microorganisms to attach, grow and quickly form biofilms, and has low processing costs; at the same time, the overall structure has high stability and is not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the biofilm carrier in Example 1.

[0017] Figure 2 This is the front view of the biofilm carrier in Example 1.

[0018] Figure 3 This is a schematic diagram of the structure of the biofilm carrier in Example 2.

[0019] Figure 4 This is a schematic diagram of the split structure of the biofilm carrier in Example 2.

[0020] Figure 5 This is the main view of the biofilm carrier in Example 2 without auxiliary parts.

[0021] Figure 6 This is a schematic diagram of the structure of the auxiliary components in the biofilm carrier in Example 2.

[0022] Figure 7This is a schematic diagram of the structure of the biofilm carrier in Example 3.

[0023] Figure 8 This is a schematic diagram of the split structure of the biofilm carrier in Example 3.

[0024] In the accompanying drawings: 1-hollow cylinder, 2-arc cylinder, 21-slot, 3-inter-cylinder, 4-main connecting plate, 5-auxiliary connecting plate, 6-first ridge, 7-auxiliary part, 71-center column, 72-supplementary plate, 73-nut head, 74-slot, 75-second ridge. DETAILED DESCRIPTION

[0025] Embodiment 1: A preferred embodiment of the utility model provides a biofilm carrier for sewage treatment, including a hollow cylinder 1 located in the center, an arc-shaped cylinder 2 located in the outermost layer and a plurality of groups of inter-columns 3 located therebetween, wherein the plurality of groups of inter-columns 3 are sequentially arranged between the hollow cylinder 1 and the arc-shaped cylinder 2, and adjacent hollow cylinders 1, inter-columns 3 and arc-shaped cylinders 2 are each provided with a connecting plate, wherein the connecting plate comprises a main connecting plate 4 and an auxiliary connecting plate 5, wherein the main connecting plate 4 sequentially connects the inter-column 3 to the arc-shaped cylinder 2 through the hollow cylinder 1, and the auxiliary connecting plate 5 is used to connect two adjacent inter-column 3 or an arc-shaped cylinder 2 and an inter-column 3 adjacent to the arc-shaped cylinder 2 to form a highly stable whole, which is not easy to become loose when used; and the biofilm carrier has a simple structure, which greatly improves the specific surface area, is easy for microorganisms to attach, grow and quickly form biofilms, has a low processing cost, and is suitable for use in the working environment of microbial carriers.

[0026] The hollow column 1 is a hexagonal column, and the main connecting plate 4 is connected to the corners of the hollow column 1. The main connecting plate 4, the auxiliary connecting plate 5, the hollow column 1 and the intermediate column 3 are all provided with a plurality of first convex edges 6; the inner surface and the outer surface of the arc column 2 are alternately arranged with concave and convex surfaces to increase the specific surface area and increase the microbial attachment rate.

[0027] Embodiment 2: A preferred embodiment of the utility model provides a biofilm carrier for sewage treatment, which differs from the above-mentioned embodiment only in that it also includes an auxiliary part 7, the auxiliary part 7 includes a central column 71 and a plurality of supplementary plates 72 connected to the central column 71 and arranged along the circumference of the central column 71, the central column 71 is inserted into the hollow cylinder 1 and connected with a nut head 73 to fix the auxiliary part 7; a slot 74 is provided on the supplementary plate 72 to enable the supplementary plate 72 to be inserted into the hollow cylinder 1, the intermediate column 3 and the arc column 2, thereby increasing the specific surface area and achieving a high microbial attachment rate.

[0028] Example 3: A preferred embodiment of the utility model provides a biofilm carrier for sewage treatment, which differs from the above-mentioned embodiment only in that: a groove 21 matching the end of the supplementary plate 72 is provided on the convex surface of the inner surface of the arc-shaped cylinder 2, so that when the central column 71 is inserted into the hollow cylinder 1, the end of the supplementary plate 72 is inserted into the groove 21, and a plurality of second ridges 75 are provided on the supplementary plate 72.

Claims

1. A biofilm carrier for sewage treatment, characterized in that: The invention comprises a hollow cylinder (1) located in the center, an arc-shaped cylinder (2) located in the outermost layer, and a plurality of groups of inter-columns (3) located between the two. The plurality of groups of inter-columns (3) are sequentially sleeved between the hollow cylinder (1) and the arc-shaped cylinder (2). Adjacent hollow cylinders (1), inter-columns (3) and arc-shaped cylinders (2) are all provided with connecting plates. The connecting plates comprise a main connecting plate (4) and a secondary connecting plate (5). The main connecting plate (4) sequentially connects the inter-columns (3) from the hollow cylinder (1) to the arc-shaped cylinder (2). The secondary connecting plate (5) is used to connect two adjacent inter-columns (3) or an arc-shaped cylinder (2) and an inter-column (3) adjacent to the arc-shaped cylinder (2) to form a highly stable whole.

2. A biofilm carrier for sewage treatment according to claim 1, characterized in that: The hollow column (1) is a hexagonal column, and the main connecting plate (4) is connected to the corners of the hollow column (1).

3. A biofilm carrier for sewage treatment according to claim 2, characterized in that: A plurality of first ridges (6) are provided on the main connecting plate (4), the auxiliary connecting plate (5), the hollow column (1) and the intermediate column (3).

4. A biofilm carrier for sewage treatment according to claim 1, characterized in that: The inner surface and the outer surface of the arc-shaped column (2) are alternately concave and convex.

5. A biofilm carrier for sewage treatment according to any one of claims 1 to 4, characterized in that: The auxiliary part (7) includes a central column (71) and a plurality of supplementary plates (72) connected to the central column (71) and arranged along the circumference of the central column (71). The central column (71) is inserted into the hollow cylinder (1) and connected with a nut head (73) to fix the auxiliary part (7).

6. A biofilm carrier for sewage treatment according to claim 5, characterized in that: The supplementary plate (72) is provided with a slot (74) to enable the supplementary plate (72) to be inserted between the hollow column (1), the intermediate column (3) and the arc column (2).

7. A biofilm carrier for sewage treatment according to claim 6, characterized in that: A slot (21) matching the end of the supplementary plate (72) is provided on the convex surface of the inner surface of the arc-shaped column (2), so that when the central column (71) is inserted into the hollow column (1), the end of the supplementary plate (72) is inserted into the slot (21).

8. The biofilm carrier for sewage treatment according to claim 5, characterized in that: The supplementary plates (72) are each provided with a plurality of second ridges (75).

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