Denitrification biological filter system
By setting up multi-layer filter media and denitrifying bacteria carrier in the filter, combined with Z-shaped support network and exhaust port design, the structural shortcomings of the denitrifying biological filter system in the existing technology are solved, and the effect of efficient removal of nitrogen pollutants is achieved.
Patent Information
- Application Number
- CN202422136192.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-02
AI Technical Summary
When removing nitrogen oxides, existing biological filter systems are difficult to effectively separate suspended substances and provide sufficient surface area for denitrifying bacteria to attach and grow, affecting the water purification effect.
Multiple layers of filter media of different particle sizes are installed in the filter tank, and denitrifying bacteria carriers are mixed between the media. The Z-shaped support network structure is adopted, and the water distributor and exhaust port design is combined to optimize water flow distribution and gas emissions.
It improves the denitrification effect, enhances the stability and processing efficiency of the filter tank, and ensures the continuous and stable operation of the system.
Smart Images
Figure CN223047351U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water treatment, and more specifically, the utility model relates to a denitrifying biological filter system. Background Art
[0002] With the advancement of industrialization and the development of urbanization, the problem of nitrogen pollution in water bodies has become increasingly serious. In particular, the high concentration of nitrogen oxides (such as nitrates and nitrites) not only harms the balance of the water ecosystem but also poses a threat to human health. In the prior art, a biological filter system is often used to remove nitrogen oxides, but there are many deficiencies in the structural design and treatment efficiency of traditional filter systems. In particular, it is difficult to effectively separate suspended solids and provide a sufficient surface area for the attachment and growth of denitrifying bacteria, thus affecting the purification effect of water bodies. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a denitrifying biological filter system with a reasonable structure and high efficiency in removing nitrogen pollutants to solve the deficiencies existing in the prior art.
[0004] To achieve the above purpose, the technical solution of the utility model is as follows:
[0005] A denitrifying biological filter system includes a filter tank. An inlet is provided at the top of the filter tank, and the inlet is connected to an inlet pipe. The inlet pipe is connected to an external water source through a flange or a sealing joint to ensure that water can smoothly enter the denitrifying filter tank. A filtering medium layer is provided in the filter tank. The filtering medium layer is laid with multiple layers of filtering media with different particle sizes from bottom to top. A support network is provided in the filtering medium layer, and a denitrifying bacteria carrier is also mixed between the filtering media. An outlet is provided at the bottom or side of the filter tank, and the outlet is connected to a drainage pipe. The drainage pipe is connected to an external drainage system through a flange or a sealing joint to ensure that the treated water can smoothly drain out of the filter tank.
[0006] As an improvement of the utility model, the support network is in a Z shape, and the filtering medium is naturally laid on the support network by gravity.
[0007] As an improvement of the utility model, the filtering medium includes coarse sand, fine sand, and quartz sand.
[0008] As an improvement of the utility model, a water distributor is further provided at the top of the filter tank, and the water distributor is connected to the inlet.
[0009] As an improvement of the utility model, an exhaust port is further provided at the highest point of the filter tank. The exhaust port is connected to the atmosphere or an exhaust system through a pipe to prevent the accumulation of gas in the filter tank from causing an increase in the air pressure in the system and ensure the normal operation of the system.
[0010] The beneficial effects of the utility model are:
[0011] The denitrification biological filter system of the utility model can provide sufficient surface area for denitrifying bacteria to attach and grow by reasonably arranging multiple layers of filter media of different particle sizes in the filter tank and mixing denitrifying bacteria carriers between the media, thereby improving the denitrification effect. At the same time, the Z-shaped support network structure is adopted, which not only enhances the stability of the filter tank, but also allows the filter media to be naturally laid under the action of gravity, thereby optimizing the water flow distribution. In addition, the setting of the water distributor ensures the uniform distribution of the incoming water, and the setting of the exhaust port effectively removes the gas generated during the denitrification process, ensuring the stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model.
[0013] List of Figure Symbols:
[0014] 1. Filter tank; 2. Water inlet; 3. Water inlet pipe; 4. Filter medium layer; 5. Coarse sand; 6. Fine sand; 7. Quartz sand; 8. Support network; 9. Water outlet; 10. Drainage pipe; 11. Water distributor; 12. Exhaust port. DETAILED DESCRIPTION
[0015] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the accompanying drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.
[0016] In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0017] As shown in the figure, a denitrifying biological filter 1 system includes a filter 1. An inlet 2 is provided at the top of the filter 1, and the inlet 2 is connected to an inlet pipe 3. The inlet pipe 3 is connected to an external water source through a flange or a sealing joint to ensure that water can smoothly enter the denitrifying filter 1. A filter medium layer 4 is provided in the filter 1. The filter medium layer 4 is laid with multiple layers of filter media with different particle sizes from bottom to top. A support network 8 is provided in the filter medium layer 4, and a denitrifying bacteria carrier is also mixed between the filter media. An outlet 9 is provided at the bottom or side of the filter 1, and the outlet 9 is connected to a drainage pipe 10. The drainage pipe 10 is connected to an external drainage system through a flange or a sealing joint to ensure that the treated water can smoothly drain out of the filter 1.
[0018] The support network 8 of the present utility model is in a Z shape, and the filter medium is naturally laid on the support network 8 by gravity.
[0019] The filter medium of the present utility model includes coarse sand 5, fine sand 6 and quartz sand 7.
[0020] A water distributor 11 is further provided at the top of the filter 1 of the present utility model, and the water distributor 11 is connected to the inlet 2.
[0021] An exhaust port 12 is further provided at the highest point of the filter 1 of the present utility model. The exhaust port 12 is connected to the atmosphere or an exhaust system through a pipe to prevent the accumulation of gas in the filter 1 from causing the increase of the air pressure in the system and ensure the normal operation of the system.
[0022] The working principle and usage process of the present utility model:
[0023] In actual use, the water body containing nitrogen pollutants enters the filter 1 through the inlet pipe 3 and is evenly distributed to the filter medium layer 4 by the water distributor 11. The water body flows through the coarse sand 5 layer, the fine sand 6 layer and the quartz sand 7 layer in sequence. During the flowing process, suspended particles are intercepted by the filter medium layer 4, and the nitrate in the water undergoes a denitrification reaction on the denitrifying bacteria carrier and is finally converted into nitrogen and discharged.
[0024] The purified water after denitrification treatment is discharged through the outlet 9 at the bottom or side of the filter 1. The concentration of nitrogen pollutants in the discharged water body is greatly reduced, meeting the environmental protection discharge standards. At the same time, the exhaust port 12 timely discharges the gas generated during the reaction process, ensuring the balance of the air pressure in the system and the continuous and stable operation of the system.
[0025] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.
[0026] The accompanying drawings only illustrate the technical concept of the present utility model, and the protection scope of the present utility model cannot be limited by this shape. For those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications all fall within the protection scope of the claims of the present utility model.
Claims
1. A denitrification biological filter system, comprising a filter tank, characterized in that: A water inlet is provided on the top of the filter tank, and the water inlet is connected to a water inlet pipe. A filter medium layer is provided in the filter tank, and multiple layers of filter media with different particle sizes are laid in sequence from bottom to top. A support network is provided in the filter medium layer, and denitrifying bacteria carriers are mixed between the filter media. A water outlet is provided at the bottom or side of the filter tank, and the water outlet is connected to a drainage pipe.
2. The denitrification biofilter system according to claim 1, characterized in that: The support network is in a Z shape, and the filter medium is naturally laid on the support network due to gravity.
3. The denitrification biofilter system according to claim 2, characterized in that: The filter medium includes coarse sand, fine sand and quartz sand.
4. The denitrification biofilter system according to any one of claims 1 to 3, characterized in that: A water distributor is also provided on the top of the filter tank, and the water distributor is connected to the water inlet.
5. The denitrification biofilter system according to claim 4, characterized in that: An exhaust port is also provided at the highest point of the filter tank.