Vertical biological contact filter tank for sewage treatment
By using annular packing support and braided biological ropes in the vertical biological contact filter, the problems of loose and tangled packing were solved, the microbial carrier area and treatment effect were increased, and more efficient sewage treatment was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LANZHOU KAISANO ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-21
AI Technical Summary
In existing vertical biological contact filters, the packing material becomes loose and tangled during use, resulting in a reduction in the surface area of the microbial carrier and affecting the treatment effect.
The design employs an annular packing support and braided biological ropes. By attaching braided biological ropes to the outer surface of the annular packing support and combining them with autotrophic biological contact balls, a stable microbial carrier is provided. The spacing between the supports is adjusted by regulating the threaded rods and sliders, which enhances the structural stability.
It increases the surface area of the microbial carrier, enhances the treatment effect, prevents the packing material from becoming loose and tangled, improves the efficiency of sewage treatment, and allows for adjustment of the spacing and number of supports as needed.
Smart Images

Figure CN224147844U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a biological contact filter, specifically a vertical biological contact filter used in wastewater treatment, belonging to the technical field of oxidation filtration sedimentation tank equipment. Background Technology
[0002] Currently, large and medium-sized industrial wastewater treatment projects in China mainly adopt two advanced treatment technologies: ozone oxidation combined with aerated biological filters and Fenton oxidation combined with sedimentation filtration. The former is suitable for situations where ozone oxidation of wastewater pollutants is effective and there is a need for wastewater reuse. It has become a standard process in wastewater treatment in the petrochemical and coal chemical industries. The latter is suitable for projects where there is no need for wastewater reuse and sludge disposal costs are low. It is mainly used in wastewater treatment in industries such as chemical fiber, printing and dyeing, and papermaking.
[0003] Biological contact filters require the internal packing material to come into contact with microorganisms during use. Therefore, the packing material needs to be placed on the carrier inside the filter body to increase the contact area between the packing material and the microorganisms and maximize the treatment effect. Common biological contact filters usually have a wall-mounted carrier, which can lead to the packing material becoming loose during use. Furthermore, due to its looseness, it can become entangled under the influence of water flow, damaging the sewage lifting device and reducing the microbial carrier area of the packing material, thus affecting the treatment effect.
[0004] Therefore, a vertical biological contact filter for wastewater treatment is proposed here. Utility Model Content
[0005] This invention proposes a vertical biological contact filter for wastewater treatment to solve the problem of poor treatment effect in existing vertical biological contact filters.
[0006] This utility model is achieved through the following technical solution: a vertical biological contact filter for sewage treatment, comprising a tank body, the inner wall of which is provided with multiple grooves, and the interior of the tank body is provided with multiple sliders, which are slidably connected to the grooves. Fastening bolts are installed on the inner side of each slider, and the other end of each fastening bolt contacts the inner wall of the groove. A track plate is fixed to the bottom surface of each slider, and an annular packing support is provided on the upper surface of the track plate. The inner wall of the annular packing support has uniformly spaced holes, and a braided biological rope is hung on the outer surface of the annular packing support.
[0007] The inner wall of the track plate is slidably connected to a track block, and a clamping plate is fixed on the upper surface of the track block. The clamping plate is engaged with an annular packing bracket. An adjusting threaded rod is rotatably connected to the inner wall of the track block. The adjusting threaded rod passes through the track block and is threadedly connected to the track block. An adjusting rod is rotatably connected to the side of the track plate, and the other end of the adjusting rod is connected to the adjusting threaded rod.
[0008] The braided biological rope has a diameter of Φ80 and an installation spacing of 150mm. The braided biological rope is hung on the annular packing support and suspended in multiple layers on the inner wall of the pool. It is used in conjunction with the autotrophic biological contact ball for treatment. It can provide a good carrier for microorganisms and further improve the treatment effect.
[0009] The annular packing support is made of fiberglass, with a width of 100mm and a thickness of 50mm. The annular support has evenly spaced holes, each Φ50 in size, spaced 150mm apart.
[0010] The pool body is equipped with multiple annular packing supports, with a spacing of 500mm. The number and size of the annular packing supports vary depending on the size and height of the pool body.
[0011] The braided biological rope filler is evenly hung at the opening on the ring support, with a reserved position for the placement and lifting of the return device. The braided biological rope filler is in a taut state when hung, which can avoid the problem of the filler being loose and tangling under the influence of water flow, as in the old hanging method.
[0012] An inspection hole is provided on the upper surface of the pool body. A water pump is installed on the inner bottom wall of the pool body. The pool body is connected to an external device through a pipe. A water inlet pipe is installed at the input end of the water pump, and the other end of the water inlet pipe passes through the pool body.
[0013] This invention provides a vertical biological contact filter for wastewater treatment, which has the following beneficial effects:
[0014] 1. This vertical biological contact filter for wastewater treatment features an annular packing support with openings on its outer surface. Braided biological ropes are then hung on the outer surface of the support. When hung, the braided biological ropes are taut, resembling a badminton racket. Combined with autotrophic biological contact balls, this design provides an excellent carrier for microorganisms, further enhancing the treatment effect and solving the problem of poor treatment performance common in existing vertical biological contact filters.
[0015] 2. The vertical biological contact filter used in sewage treatment can adjust the position of the slider and thus the spacing and number of the annular packing support according to the actual usage requirements. At the same time, the annular packing support itself can also serve as internal reinforcement of the tank body, enhancing the tank body's ability to withstand water pressure and preventing tank body deformation. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the internal structure of the pool body of this utility model;
[0018] Figure 3 This is a schematic diagram of the structure at the location of the annular packing support of this utility model;
[0019] Figure 4 This is a detailed structural drawing of the track slab location of this utility model.
[0020] Explanation of reference numerals in the attached figures
[0021] 1. Pool body; 2. Sliding block; 3. Fastening bolt; 4. Track plate; 5. Annular packing support; 6. Braided biological rope; 7. Track block; 8. Clamping plate; 9. Adjusting threaded rod; 10. Adjusting rod; 11. Inspection hole; 12. Water pump; 13. Inlet pipe. Detailed Implementation
[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.
[0023] Please see Figures 1-4 The present invention proposes the following implementation scheme: a vertical biological contact filter for sewage treatment, comprising a tank body 1, the inner wall of the tank body 1 having multiple grooves, the interior of the tank body 1 having multiple sliders 2, the sliders 2 being slidably connected to the grooves, the inner side of the sliders 2 being fitted with fastening bolts 3, the other end of the fastening bolts 3 being in contact with the inner wall of the grooves, the bottom surface of each slider 2 being fixed with a track plate 4, the upper surface of the track plate 4 being provided with an annular packing support 5, the inner wall of the annular packing support 5 being evenly perforated, and the outer surface of the annular packing support 5 being hung with a braided biological rope 6.
[0024] Please refer to this carefully. Figure 2 , Figure 3 and Figure 4The inner wall of the track plate 4 is slidably connected to a track block 7. A clamping plate 8 is fixed on the upper surface of the track block 7. The clamping plate 8 is engaged with the annular packing bracket 5. An adjusting threaded rod 9 is rotatably connected to the inner wall of the track block 7. The adjusting threaded rod 9 passes through the track block 7 and is threadedly connected to the track block 7. An adjusting rod 10 is rotatably connected to the side of the track plate 4. The other end of the adjusting rod 10 is connected to the adjusting threaded rod 9.
[0025] Please refer to this carefully. Figure 2 , Figure 3 and Figure 4 The braided biological rope 6 has a diameter of Φ80 and an installation spacing of 150mm. The braided biological rope 6 is hung on the annular packing support 5 and suspended in multiple layers on the inner wall of the pool 1. It works in conjunction with the autotrophic biological contact balls for treatment. It can provide a good carrier for microorganisms and further improve the treatment effect. The annular packing support 5 is a fiberglass support with a width of 100mm and a thickness of 50mm. The annular support has evenly distributed holes with a size of Φ50 and a spacing of 150mm. There are multiple annular packing supports 5 installed inside the pool 1, with a spacing of 500mm. The number and size of the annular packing supports 5 are also changed according to the size and height of the pool 1.
[0026] Please refer to this carefully. Figure 2 , Figure 3 and Figure 4 The braided biological rope 6 packing material is evenly hung on the opening of the ring support, with a reserved position for the placement and lifting of the return device. The braided biological rope 6 packing material is in a taut state when hung, which can avoid the problem of the packing material being loose and tangling under the influence of water flow, as in the old hanging method. An inspection hole 11 is opened on the upper surface of the pool body 1. A water pump 12 is installed on the inner bottom wall of the pool body 1. The pool body 1 is connected to the external device through a pipe. A water inlet pipe 13 is installed at the input end of the water pump 12, and the other end of the water inlet pipe 13 passes through the pool body 1.
[0027] In use, this utility model involves setting up an annular packing support 5 with openings on its outer surface. A braided biological rope 6 is then hung on the outer surface of the annular packing support 5. When hung, the braided biological rope 6 is taut, like a badminton racket. Combined with the self-supporting biological contact ball, it provides an excellent carrier for microorganisms, further improving the treatment effect and solving the problem of poor treatment effect in existing vertical biological contact filters.
[0028] During use, the position of the slider 2 can be adjusted according to actual usage needs, thereby adjusting the spacing and number of the annular packing support 5. At the same time, the annular packing support 5 itself can also serve as internal reinforcement of the pool body 1, enhancing the pool body 1's ability to withstand water pressure and preventing deformation of the pool body 1. Furthermore, during use, by inserting the output end of the air source heating device into the interior of the pool body 1, the temperature inside the pool body 1 can be efficiently raised, thereby adjusting the temperature inside the pool body 1 to a suitable range.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A vertical biological contact filter for use in sewage treatment, comprising a tank (1), characterised in that: The inner wall of the pool body (1) is provided with multiple sliding grooves. Multiple sliders (2) are provided inside the pool body (1). The sliders (2) are slidably connected to the sliding grooves. Fastening bolts (3) are installed on the inner side of the sliders (2). The other end of the fastening bolts (3) is in contact with the inner wall of the sliding groove. Track plates (4) are fixed on the bottom surface of each slider (2). An annular packing support (5) is provided on the upper surface of the track plate (4). The inner wall of the annular packing support (5) is evenly perforated. Braided biological ropes (6) are hung on the outer surface of the annular packing support (5).
2. A vertical biological contact filter for use in sewage treatment according to claim 1, characterized in that: The inner wall of the track plate (4) is slidably connected to a track block (7), and a clamping plate (8) is fixed on the upper surface of the track block (7). The clamping plate (8) is engaged with the annular packing bracket (5). The inner wall of the track block (7) is rotatably connected to an adjusting threaded rod (9). The adjusting threaded rod (9) passes through the track block (7) and is threadedly connected to the track block (7). The side of the track plate (4) is rotatably connected to an adjusting rod (10), and the other end of the adjusting rod (10) is connected to the adjusting threaded rod (9).
3. A vertical biological contact filter for use in sewage treatment according to claim 1, characterized in that: The braided biological rope (6) has a diameter of Φ80 and an installation spacing of 150mm. The braided biological rope (6) is hung on the annular packing support (5) and suspended in multiple layers on the inner wall of the pool body (1).
4. A vertical biological contact filter for use in sewage treatment according to claim 1, characterized in that: The annular packing support (5) is made of fiberglass, with a support width of 100mm and a thickness of 50mm. The annular support has uniformly opened holes with a hole size of Φ50 and a hole spacing of 150mm.
5. A vertical biological contact filter for use in sewage treatment according to claim 1, characterized in that: The pool body (1) is equipped with multiple annular packing supports (5) with a spacing of 500mm. The number and size of the annular packing supports (5) vary depending on the size and height of the pool body (1).
6. A vertical biological contact filter for use in sewage treatment according to claim 1, characterized in that: The braided biological rope (6) filler is evenly hung on the opening of the ring support, with a reserved position for the placement and lifting of the return device. The braided biological rope (6) filler is in a taut state when it is hung.
7. A vertical biological contact filter for use in sewage treatment according to claim 1, wherein: The upper surface of the pool body (1) is provided with an inspection hole (11), and a water pump (12) is installed on the inner bottom wall of the pool body (1). The pool body (1) is connected to an external device through a pipe. The input end of the water pump (12) is equipped with a water inlet pipe (13), and the other end of the water inlet pipe (13) passes through the pool body (1).