A biological filter medium screening device

Abstract

The utility model belongs to the biological filter technical field, concretely is a kind of biological filter filler screening device, including filter tank box;Multiple supports are fixedly connected in the middle part of filter tank box, the support shape is set as L type, the support top is equipped with filler rack, the filler rack is connected with support, two plug rods are connected at the top of filter tank box, the plug rod top is fixedly connected with water guide pipe, water guide pipe side is connected with external water pipe, the bottom of filter tank box is connected with receiving pool, when working, external water pipe is connected with sewage and water pump, and sewage is transferred into water guide pipe, then flows into filter tank box from water guide pipe, support and plug rod are set to three, respectively install on filter tank box upper, middle, lower layer, from top to bottom;Different particle size fillers are filled on the multiple filler racks by setting, suspend and impurity with larger particle size in sewage are intercepted, avoid the situation of blocking lower layer filler.

Description

Technical Field

[0001] This utility model belongs to the field of biological filter technology, specifically a biological filter packing screening device. Background Technology

[0002] Biological filters are a highly efficient and environmentally friendly wastewater treatment technology. Their core principle involves a biofilm formed by a large number of microorganisms attached to the filter media. When wastewater flows through the filter media, the microorganisms utilize organic matter, ammonia nitrogen, and other pollutants in the wastewater as nutrients for metabolic activities, converting them into carbon dioxide, water, and harmless substances, thereby achieving pollutant removal and water purification. This technology boasts advantages such as high treatment efficiency, low operating costs, and strong resistance to shock loads. Furthermore, it requires no chemical additives, minimizing the risk of secondary pollution. It is widely used in urban wastewater treatment, industrial wastewater treatment, and greywater reuse, and is an important technological means to promote the sustainable use of water resources.

[0003] Biological filter media is the core medium of biological filters. It is usually made of porous materials with large specific surface area and stable chemical properties (such as ceramsite, volcanic rock, polypropylene plastic balls, or activated carbon). Its rough surface and well-developed pores provide an ideal environment for microorganisms to attach and grow. It can efficiently intercept suspended solids in sewage and form a biofilm. Through the metabolism of microorganisms, pollutants such as organic matter and ammonia nitrogen are degraded. At the same time, its good air permeability and water permeability ensure sufficient oxygen supply and uniform water flow distribution, thereby significantly improving sewage treatment efficiency and reducing operating costs. It is an indispensable functional material in modern biological treatment processes.

[0004] In existing technologies, biological filters do not achieve ideal filtration results in actual use; wastewater contains suspended solids and impurities with large particle sizes, which easily cause the packing material to become clogged, making it difficult to meet the needs of long-term use.

[0005] Therefore, this utility model provides a biological filter packing screening device. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A biological filter media screening device of this utility model includes a filter box; multiple supports are fixedly connected to the middle of the filter box, the supports are L-shaped, a media frame is provided on the top of the supports, the media frame is snapped into the supports, two insert rods are snapped into the top of the filter box, and a water guide pipe is fixedly connected to the top of the insert rods. External water pipes are connected to both sides of the water guide pipes, and a receiving tank is connected to the bottom of the filter box. During operation, the external water pipes connect to sewage and a water pump, transmitting sewage to the water guide pipes, and then flowing into the filter box from the water guide pipes. Three supports and insert rods are provided, respectively installed on the upper, middle, and lower layers of the filter box, from top to bottom. The packing materials used in each layer of the packing frame are different. The upper layer contains larger particles, such as volcanic rock, ceramsite, or high-strength hollow plastic spheres. Utilizing the high porosity and large gaps of these large-particle packing materials, wastewater passes through quickly. Simultaneously, a small number of microorganisms adhere to the rough surface, initiating the degradation process and trapping larger suspended solids and impurities in the wastewater, preventing clogging of the lower layers. This also provides initial adsorption of organic matter, reducing the burden on subsequent biodegradation. The middle layer contains smaller particles than the upper layer, such as ceramsite, lightweight volcanic rock, or modified activated carbon, which have a large specific surface area and good biocompatibility. The larger specific surface area allows for the adhesion of more microorganisms, forming a thick biofilm. Through metabolism... Metabolism transforms pollutants into harmless substances. Microbial communities, such as nitrifying bacteria and heterotrophic bacteria, decompose organic matter in an aerobic environment and convert ammonia nitrogen into nitrates. The lower layer of packing material contains smaller particles, such as high-strength quartz sand, fine ceramsite, or porous ceramics. The dense pores of the packing enhance the retention effect, while a small number of microorganisms adhere to it, performing a final degradation of residual pollutants. This further retains residual fine suspended solids and detached biofilm fragments, stabilizing the effluent quality and preventing the effluent turbidity from increasing due to the shedding of the intermediate biofilm layer. By setting up multiple layers of packing material filled with different particle sizes, larger suspended solids and impurities in the wastewater are retained, preventing clogging of the lower packing layer.

[0008] Preferably, a filter plate is fixedly connected to the middle of the packing frame, and a filter screen is provided on the top of the filter plate. One end of the filter screen is hinged to the packing frame, and the other end of the filter screen is snapped into the packing frame. During operation, the filter screen is snapped into the packing frame. After opening the filter screen, the packing is placed on the filter plate, and then the filter screen is closed. Finally, the packing frame is installed on the bracket. This allows for hierarchical and individual management of different packing materials in each layer, and it is simple to disassemble and assemble, and easy to replace. On each layer of the packing frame, the filter plates and filter screens have the same aperture, and the aperture of the filter plates and filter screens on the packing frame decreases progressively from top to bottom. By setting multiple filter plates and filter screens with different apertures, suspended solids and impurities can be effectively intercepted, reducing the possibility of suspended solids and impurities entering the lower packing and causing blockage, while protecting each layer of packing from penetrating the filter plate.

[0009] Preferably, the external water pipe is connected to two annular pipes in the middle, and a support pipe is connected to the middle of the annular pipes. The support pipe is connected to the external water pipe. During operation, the annular pipes and the support pipes divert the sewage in the water guide pipe, so that the sewage can flow more evenly through the packing on the packing frame. This reduces the situation where sewage concentrates in one place on the packing, causing the packing to be damaged by long-term water flow impact. The annular pipes and the support pipes achieve uniform water distribution and can also improve the utilization rate of the packing.

[0010] Preferably, a sealing ring is fixedly connected to the outside of the packing frame. The sealing ring is in corresponding contact with the filter box. During operation, when the packing frame is installed on the bracket, the bracket will lock the bottom of the packing frame to achieve a snap-fit ​​installation. However, since the filter box is truncated cone-shaped with oblique sides, it cannot contact the packing frame. The sealing ring will fill the gap in this part and increase the friction between the packing frame and the bracket, reducing the possibility of the packing frame becoming loose on the bracket.

[0011] Preferably, the outer side of the insertion rod is provided with a protective plate, which is fixedly connected to the filter tank. During operation, the protective plate protects the outer side of the annular pipe, support pipe, and water guide pipe, reducing the splashing of sewage onto the outside of the filter tank.

[0012] Preferably, the filter tank has two grooves in the middle, and a transparent plate is fixedly connected to the middle of the grooves. During operation, the grooves and the transparent plate can observe the sewage treatment inside the filter tank, and thus analyze the filtration status of the biological packing.

[0013] The beneficial effects of this utility model are as follows: 1. The biological filter packing screening device of this utility model, by setting up a multi-layer packing frame filled with packing materials of different particle sizes, intercepts suspended solids and impurities with larger particle sizes in sewage, and avoids clogging of the lower packing materials.

[0014] 2. The biological filter packing screening device of this utility model can effectively intercept suspended solids and impurities by setting multiple filter plates and filter screens with different pore sizes, thereby reducing the possibility of suspended solids and impurities entering the lower packing layer and causing blockage, while protecting each layer of packing from penetrating the filter plate. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the filter tank structure in this utility model; Figure 3 This is a schematic diagram of the annular tube structure in this utility model; Figure 4 This is a schematic diagram of the filter plate in this utility model; Figure 5 This is a schematic diagram of the structure of the bracket in this utility model; In the diagram: 1. Filter tank; 11. Support frame; 12. Packing material frame; 13. Insert rod; 14. Water guide pipe; 15. External water pipe; 16. Receiving tank; 2. Filter plate; 21. Filter screen; 3. Annular pipe; 31. Support pipe; 4. Sealing ring; 5. Protective plate; 6. Groove; 61. Transparent plate. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figures 1 to 5As shown in the embodiment of this utility model, a biological filter media screening device includes a filter box 1. Multiple supports 11 are fixedly connected to the middle of the filter box 1. The supports 11 are L-shaped, and a media frame 12 is provided on the top of each support 11. The media frame 12 is snapped into the supports 11. Two insert rods 13 are snapped into the top of the filter box 1. A water guide pipe 14 is fixedly connected to the top of each insert rod 13. External water pipes 15 are connected to both sides of the water guide pipe 14. A receiving tank 16 is connected to the bottom of the filter box 1. During operation, the external water pipes 15 connect to sewage and a water pump, transmitting sewage to the water guide pipe 14, which then flows into the filter box 1. Three supports 11 and three insert rods 13 are respectively installed on the upper, middle, lower, and upper layers of the filter box 1, from top to bottom. The packing materials in each layer of the packing frame 12 are different. The packing material in the upper layer of the packing frame 12 has a larger particle size, such as volcanic rock, ceramsite, or high-strength hollow plastic spheres. Utilizing the high porosity and large gaps of the large-diameter packing material, wastewater passes through quickly. Simultaneously, a small number of microorganisms adhere to the rough surface, initiating the degradation process and trapping larger suspended solids and impurities in the wastewater, preventing clogging of the lower packing layers. It also initially adsorbs organic matter, reducing the burden on subsequent biodegradation. The packing material in the middle layer of the packing frame 12 has a smaller particle size than that in the upper layer, such as ceramsite, lightweight volcanic rock, or modified activated carbon with a large specific surface area and good biocompatibility. The large specific surface area allows more microorganisms to adhere, forming a thick biofilm. Metabolism transforms pollutants into harmless substances. Microbial communities, such as nitrifying bacteria and heterotrophic bacteria, decompose organic matter in an aerobic environment and convert ammonia nitrogen into nitrates. The filler particles in the lower layer of the packing frame 12 are smaller, such as high-strength quartz sand, fine ceramsite, or porous ceramics. The dense pores of the filler enhance the interception effect, and a small number of microorganisms are attached to carry out a final degradation of residual pollutants, further intercepting residual fine suspended solids and detached biofilm fragments, stabilizing the effluent water quality, and avoiding the detachment of the intermediate layer of biofilm that would lead to an increase in effluent turbidity. By setting up multiple layers of packing frames 12 filled with fillers of different particle sizes, larger suspended solids and impurities in the sewage are intercepted, avoiding clogging of the lower layer of packing.

[0019] like Figures 1 to 4As shown, a filter plate 2 is fixedly connected to the middle of the packing frame 12. A filter screen 21 is provided on the top of the filter plate 2. One end of the filter screen 21 is hinged to the packing frame 12, and the other end of the filter screen 21 is snapped into the packing frame 12. During operation, the filter screen 21 is snapped into the packing frame 12. After opening the filter screen 21, the packing is placed on the filter plate 2, and then the filter screen 21 is closed. Finally, the packing frame 12 is installed on the bracket 11. This allows for hierarchical and individual management of different packing materials in each layer, and it is simple to disassemble and replace. On each layer of the packing frame 12, the filter plate 2 and the filter screen 21 have the same aperture. The aperture of the filter plate 2 and the filter screen 21 on the packing frame 12 decreases progressively from top to bottom. By setting multiple layers of filter plates 2 and filter screens 21 with different apertures, suspended solids and impurities can be effectively intercepted, reducing the possibility of suspended solids and impurities entering the lower packing and causing blockage. At the same time, it protects each layer of packing from penetrating the filter plate 2.

[0020] like Figures 1 to 3 As shown, the external water pipe 15 is connected to two annular pipes 3 in the middle, and a support pipe 31 is connected to the middle of the annular pipe 3. The support pipe 31 is connected to the external water pipe 15. During operation, the annular pipe 3 and the support pipe 31 divert the sewage in the water guide pipe 14, so that the sewage can flow more evenly through the packing on the packing frame 12, reducing the situation where sewage concentrates in a certain place on the packing, causing the packing to be damaged by water flow impact for a long time. The annular pipe 3 and the support pipe 31 achieve uniform water distribution and can also improve the utilization rate of the packing.

[0021] like Figures 2 to 4 As shown, a sealing ring 4 is fixedly connected to the outside of the packing frame 12. The sealing ring 4 is in corresponding contact with the filter tank 1. During operation, when the packing frame 12 is installed on the bracket 11, the bracket 11 will lock the bottom of the packing frame 12 to achieve a snap-fit ​​installation. However, since the filter tank 1 is truncated cone in shape and the side is oblique, it cannot contact the packing frame 12. The sealing ring 4 will fill the gap in this part and increase the friction between the packing frame 12 and the bracket 11, reducing the possibility of the packing frame 12 becoming loose on the bracket 11.

[0022] like Figures 1 to 2 As shown, the outer side of the insertion rod 13 is provided on the protective plate 5. The protective plate 5 is fixedly connected to the filter tank 1. During operation, the protective plate 5 protects the outer side of the annular pipe 3, the support pipe 31, and the water guide pipe 14, reducing the situation where sewage splashes onto the outside of the filter tank 1.

[0023] like Figures 1 to 2 As shown, two grooves 6 are provided in the middle of the filter tank 1, and a transparent plate 61 is fixedly connected to the middle of the grooves 6. During operation, the grooves 6 and the transparent plate 61 can observe the sewage treatment inside the filter tank 1, and thus analyze the filtration status of the biological packing.

[0024] Working principle: The external water pipe 15 connects the sewage and the water pump, transmitting the sewage to the guide pipe 14, and then from the guide pipe 14 into the filter tank 1. Three supports 11 and insert rods 13 are installed on the upper, middle, and lower layers of the filter tank 1, respectively. From top to bottom, the packing material on each layer of the packing frame 12 is different. The packing material in the upper layer of the packing frame 12 has a larger particle size, such as volcanic rock, ceramsite, or high-strength hollow plastic spheres. Utilizing the high porosity and large gaps of the large-diameter packing material, sewage passes through quickly, while a small amount of microorganisms adhere to the rough surface. The middle layer of packing 12 has a smaller particle size than the upper layer, and uses materials such as ceramsite, lightweight volcanic rock, or modified activated carbon with large specific surface area and good biocompatibility to decompose organic matter and form a thick biofilm. Through metabolism, pollutants are converted into harmless substances. Microbial communities, such as nitrifying bacteria and heterotrophic bacteria, decompose organic matter in an aerobic environment and convert ammonia nitrogen into nitrates. The lower layer of packing 12 has even smaller particle size, such as high-strength quartz sand, fine ceramsite, or porous ceramics. The dense pores of the packing enhance the retention effect, and the presence of a small number of microorganisms further degrades residual pollutants, retaining fine suspended solids and detached biofilm fragments, stabilizing the effluent quality, and preventing the detachment of the middle layer biofilm from causing an increase in effluent turbidity. By setting up multiple layers of packing 12 filled with different particle sizes... The filter screen 21 is snapped into the filter plate 2 after the filter screen 21 is opened. Then the filter screen 21 is closed and the filter is placed on the filter plate 2. Finally, the filter is installed on the support 11. This allows for separate management of different filter media in each layer, and it is easy to disassemble and replace. The filter plates 2 and filter screens 21 on each layer of the filter is of the same diameter. The diameter of the filter plates 2 and filter screens 21 on the filter is gradually reduced from top to bottom.By setting up multi-layer filter plates 2 and filter screens 21 with different pore sizes, suspended solids and impurities can be effectively intercepted, reducing the possibility of suspended solids and impurities entering the lower packing layer and causing blockage. At the same time, it protects each layer of packing from penetrating the filter plate 2. The annular pipe 3 and support pipe 31 divert sewage in the water guide pipe 14, allowing sewage to flow more evenly across the packing on the packing frame 12. This reduces the risk of sewage concentrating in one spot on the packing, preventing long-term damage from water flow impact. The annular pipe 3 and support pipe 31 achieve uniform water distribution and also improve the utilization rate of the packing. When the packing frame 12 is installed on the support 11… The bracket 11 engages with the bottom of the packing frame 12 for snap-fit ​​installation. However, since the filter tank 1 is frustum-shaped with beveled sides, it does not make contact with the packing frame 12. The sealing ring 4 fills this gap and increases the friction between the packing frame 12 and the bracket 11, reducing the likelihood of the packing frame 12 becoming loose on the bracket 11. The protective plate 5 protects the outside of the annular pipe 3, support pipe 31, and water guide pipe 14, reducing the splashing of sewage onto the outside of the filter tank 1. The groove 6 and transparent plate 61 allow observation of the sewage treatment inside the filter tank 1, thus enabling analysis of the filtration performance of the biological packing.

[0025] 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A biological filter media screening device, comprising a filter tank (1); characterized in that: The filter tank (1) is fixedly connected to a number of supports (11) in the middle. The supports (11) are L-shaped. The top of the supports (11) is provided with a packing frame (12). The packing frame (12) is snapped into the supports (11). The top of the filter tank (1) is snapped with two insert rods (13). The top of the insert rods (13) is fixedly connected with a water guide pipe (14). The two sides of the water guide pipe (14) are connected to external water pipes (15). The bottom of the filter tank (1) is connected to a receiving pool (16).

2. The biological filter media screening device according to claim 1, characterized in that: A filter plate (2) is fixedly connected to the middle of the packing frame (12). A filter screen (21) is provided on the top of the filter plate (2). One end of the filter screen (21) is hinged to the packing frame (12), and the other end of the filter screen (21) is snapped to the packing frame (12).

3. The biological filter media screening device according to claim 2, characterized in that: The external water pipe (15) is connected to two annular pipes (3) in the middle, and a support pipe (31) is connected to the middle of the annular pipe (3). The support pipe (31) is connected to the external water pipe (15).

4. The biological filter media screening device according to claim 3, characterized in that: A sealing ring (4) is fixedly connected to the outside of the packing frame (12), and the sealing ring (4) is in contact with the filter tank (1).

5. A biological filter media screening device according to claim 4, characterized in that: The outside of the insertion rod (13) is provided with a protective plate (5), which is fixedly connected to the filter tank (1).

6. A biological filter media screening device according to claim 5, characterized in that: The filter tank (1) has two grooves (6) in the middle, and a transparent plate (61) is fixedly connected to the middle of the grooves (6).

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