A biological filtration water treatment device suitable for use in a recirculating aquaculture system

Abstract

The utility model provides a kind of biological filtration water treatment device suitable for circulating water aquaculture system, including sewage tank and multiple biological filtration units being installed on the sewage tank, adjacent biological filtration units can be combined into filter mechanism, one end of the filter mechanism is connected with the driving mechanism, by the biological filtration unit being designed into independent module, and quick connection is realized using spline / keyway, the number of biological filtration unit can be flexibly increased or reduced according to the actual water treatment capacity of circulating water aquaculture system, pollutant load.This makes the device can easily adapt to different scale requirements from small-scale experimental aquaculture to large-scale commercial production.

Description

Technical Field

[0001] This utility model relates to the field of recirculating aquaculture, and in particular to a biological filtration water treatment device suitable for recirculating aquaculture systems. Background Technology

[0002] Recirculating aquaculture systems are a highly efficient and water-saving modern aquaculture model. Their core lies in the continuous purification and recycling of aquaculture water, achieving intensive use of water and land resources. In this system, the biological filtration device is a crucial component. Its main function is to utilize nitrifying bacteria and other microbial communities attached to the filter media to convert toxic ammonia nitrogen and nitrite in the water into less toxic nitrate, thereby maintaining the stability and safety of the aquaculture water quality. Currently, rotating biological discs are one of the commonly used biological filtration technologies in recirculating aquaculture systems. Their basic principle involves multiple discs connected in series, each with a biofilm attached to its surface, partially immersed in the wastewater to be treated. A drive mechanism slowly rotates the discs, causing them to alternately contact the wastewater and air, thus providing microorganisms with the oxygen and nutrients needed to decompose pollutants. However, existing biological disc filters have some obvious limitations in practical applications. First, traditional biological discs usually adopt an integrated fixed design, and the number of discs and the filtration area are determined at the beginning of construction. They cannot be flexibly adjusted according to changes in the scale of aquaculture or fluctuations in water treatment load. When the aquaculture density increases and the pollutant load rises, the filtration capacity of existing devices may be insufficient, leading to water quality deterioration. When the scale of aquaculture shrinks, large fixed discs will result in waste of equipment investment, floor space, and operating energy consumption. Utility Model Content

[0003] (a) Technical problems to be solved In order to solve the above-mentioned problems of the prior art, this utility model provides the following.

[0004] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by this utility model include: A biological filtration water treatment device suitable for recirculating aquaculture systems includes a wastewater tank and multiple biological filtration units installed on the wastewater tank. Adjacent biological filtration units can be combined to form a filtration mechanism, and one end of the filtration mechanism is connected to the drive mechanism.

[0005] Preferably, the biofiltration unit includes a rectangular frame, a bearing seat, a biodisc, a rotating shaft, pulleys, and a limiting component; The bearing housing is provided in two sets, which are symmetrically arranged on the rectangular frame; The rotating shaft is installed between the two sets of bearing seats. One end of the rotating shaft is provided with a connecting spline, and the other end of the rotating shaft is provided with a keyway corresponding to the spline. The rectangular frame is provided with pulleys at all four corners of its bottom, and the surface opening of the sewage tank is provided with grooves corresponding to the pulleys. The rectangular frame is provided with the limiting component, and the rectangular frame is fixed to the sewage tank by the limiting component.

[0006] Preferably, the limiting component includes a limiting screw and a limiting seat. The limiting seat is fixed on the rectangular frame, the limiting screw is threaded into the limiting seat and extends downward, and a plurality of limiting screw holes corresponding to the limiting screw are equally spaced in the sliding groove.

[0007] Preferably, the drive mechanism includes a drive motor, a drive wheel, a driven wheel, and a timing belt. The drive motor is connected to the drive wheel, the driven wheel is mounted on a rotating shaft at one end of the filter mechanism, and the drive wheel and the driven wheel are connected by the timing belt.

[0008] Preferably, the biological rotating disc is covered with a filter cloth.

[0009] Preferably, the rectangular frame surface is provided with multiple lifting lugs.

[0010] (III) Beneficial Effects The beneficial effects of this invention are as follows: By adopting the above technical solution, and designing the biological filtration unit as an independent module, and using splines / keyways for quick connection, the number of biological filtration units can be flexibly increased or decreased according to the actual water treatment volume and pollutant load of the recirculating aquaculture system. This allows the device to easily adapt to different scales of needs, from small-scale experimental aquaculture to large-scale commercial production. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a biological filtration water treatment device suitable for recirculating aquaculture systems. Figure 2 This is a top view schematic diagram of a biological filtration water treatment device suitable for recirculating aquaculture systems. Figure 3 Schematic diagram of the structure of a biological filtration unit Figure 1 ; Figure 4 Schematic diagram of the structure of a biological filtration unit Figure 2 .

[0012] [Explanation of Labels in the Attached Image] 1. Sewage tank; 2. Biological filtration unit; 21. Rectangular frame; 22. Bearing housing; 23. Biological turntable; 24. Rotating shaft; 25. Pulley; 26. Limiting component; 27. Spline; 28. Keyway; 3. Drive mechanism; 4. Slide groove. Detailed Implementation

[0013] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] Please refer to Figures 1 to 4 This utility model provides a biological filtration water treatment device suitable for recirculating aquaculture systems, including a sewage tank 1 and multiple biological filtration units 2 installed on the sewage tank 1. Adjacent biological filtration units 2 can be combined to form a filtration mechanism. One end of the filtration mechanism is connected to the drive mechanism 3. The biological filtration unit 2 includes a rectangular frame 21, a bearing seat 22, a biological turntable 23, a rotating shaft 24, a pulley 25, and a limiting component 26. The bearing housing 22 is provided in two sets, which are symmetrically arranged on the rectangular frame 21; The rotating shaft 24 is installed between the two sets of bearing seats 22. One end of the rotating shaft 24 is provided with a connecting spline 27, and the other end of the rotating shaft 24 is provided with a keyway 28 corresponding to the spline 27. The bottom of the rectangular frame 21 is provided with pulleys 25 at all four corners, and the surface opening of the sewage tank 1 is provided with grooves 4 corresponding to the pulleys 25. The rectangular frame 21 is provided with the limiting component 26, and the rectangular frame 21 is fixed to the sewage tank 1 by the limiting component 26. In use, by designing the biological filter unit 2 as an independent module and using splines 27 / keyways 28 for quick connection, the number of biological filter units 2 can be flexibly increased or decreased according to the actual water treatment volume and pollutant load of the recirculating aquaculture system. This allows the device to easily adapt to different scales of needs, from small-scale experimental aquaculture to large-scale commercial production.

[0015] When it is necessary to clean, replace the biological packing material, or repair internal components of the biofilter unit 2, since the biofilter units 2 are independent of each other and installed via pulleys 25 and chutes 4, the farmer can easily pull a single biofilter unit 2 out of the wastewater tank 1 without having to disassemble the entire filtration device. This convenient maintenance method not only reduces the difficulty and workload of maintenance work, but also shortens equipment downtime and reduces the impact of equipment maintenance on aquaculture production.

[0016] In this embodiment, the limiting component 26 includes a limiting screw and a limiting seat. The limiting seat is fixed on the rectangular frame 21. The limiting screw is threaded into the limiting seat and extends downward. The sliding groove 4 is provided with a plurality of limiting screw holes corresponding to the limiting screw at equal intervals. In use, the rectangular frame 21 is fixed to the sewage tank 1 by tightening the limiting screw.

[0017] In this embodiment, the drive mechanism 3 includes a drive motor, a drive wheel, a driven wheel, and a timing belt. The drive motor is connected to the drive wheel, the driven wheel is mounted on the rotating shaft 24 at one end of the filter mechanism, and the drive wheel and the driven wheel are connected by the timing belt. In use, the drive motor drives the rotating shaft 24 to rotate through the cooperation of the drive wheel, the driven wheel and the timing belt, which in turn drives the biological rotating disk 23 on the rotating shaft 24 to rotate, thereby realizing biological filtration.

[0018] In this embodiment, the biological rotating disc 23 is covered with a filter cloth.

[0019] In this embodiment, the rectangular frame 21 is provided with multiple lifting lugs on its surface. By providing lifting lugs, it is easy to lift the biological filter unit 2 for maintenance or replacement, and also to lift any excess biological filter units 2 directly.

[0020] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0021] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A biological filtration water treatment device suitable for recirculating aquaculture systems, characterized in that, It includes a sewage tank and multiple biological filtration units installed on the sewage tank. Adjacent biological filtration units can be combined to form a filtration mechanism, and one end of the filtration mechanism is connected to a drive mechanism.

2. The biological filtration water treatment device suitable for recirculating aquaculture systems according to claim 1, characterized in that, The biofiltration unit includes a rectangular frame, bearing housing, bio-disc, rotating shaft, pulleys, and limiting components; The bearing housing is provided in two sets, which are symmetrically arranged on the rectangular frame; The rotating shaft is installed between the two sets of bearing seats. One end of the rotating shaft is provided with a connecting spline, and the other end of the rotating shaft is provided with a keyway corresponding to the spline. The rectangular frame is provided with pulleys at all four corners of its bottom, and the surface opening of the sewage tank is provided with grooves corresponding to the pulleys. The rectangular frame is provided with the limiting component, and the rectangular frame is fixed to the sewage tank by the limiting component.

3. A biological filtration water treatment device suitable for recirculating aquaculture systems according to claim 2, characterized in that, The limiting component includes a limiting screw and a limiting seat. The limiting seat is fixed on the rectangular frame. The limiting screw is threaded into the limiting seat and extends downward. The sliding groove is provided with a plurality of limiting screw holes corresponding to the limiting screw at equal intervals.

4. A biological filtration water treatment device suitable for recirculating aquaculture systems according to claim 2, characterized in that, The drive mechanism includes a drive motor, a drive wheel, a driven wheel, and a timing belt. The drive motor is connected to the drive wheel, the driven wheel is mounted on a rotating shaft at one end of the filter mechanism, and the drive wheel and the driven wheel are connected by the timing belt.

5. A biological filtration water treatment device suitable for recirculating aquaculture systems according to claim 2, characterized in that, The biological rotating disc is covered with a filter cloth.

6. A biological filtration water treatment device suitable for recirculating aquaculture systems according to claim 2, characterized in that, The rectangular frame has multiple lifting lugs on its surface.

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