A biofilm reactor for wastewater treatment

Abstract

The utility model relates to sewage treatment biological membrane reaction technical field discloses a kind of biological membrane reaction equipment for sewage treatment, including reaction box, bottom plate and intercepting filter frame, the lower portion of the flow guide cylinder is equipped with annular air pipe, fixed mounting is equipped with nozzle on the annular air pipe, the upper end of the nozzle is equipped with conical dispersion block, the outer wall of the conical dispersion block is equipped with flow guide groove, the utility model is equipped with annular air pipe and oblique nozzle by setting, and the outer wall of conical dispersion block is equipped with radial flow guide groove, not only can avoid local airflow too strong or too weak, make biological membrane carrier flow more uniform, also can be assisted by the cooperation of oblique airflow and flow guide groove, prevent carrier to accumulate in bottom, while setting flow guide cylinder in the center of intercepting filter frame, along its outer wall is equipped with oblique helical rectangular slot, can force carrier to form from rising to sinking circulation flow, flow guide cylinder can allow sewage to pass freely, can effectively intercept carrier, improve sewage treatment effect.

Description

Technical Field

[0001] This utility model relates to the field of biofilm reaction technology for wastewater treatment, and in particular to a biofilm reaction device for wastewater treatment. Background Technology

[0002] Wastewater treatment refers to the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering. The biofilm process, along with the activated sludge process, is a type of aerobic biological wastewater treatment technology. It is a fixed membrane method that artificially enhances and strengthens the self-purification process of wastewater and soil, primarily removing dissolved and colloidal organic pollutants from wastewater. An existing biofilm reactor for wastewater treatment (publication number: CN220056534U) distributes the biofilm carrier inside the filter frame. The filter frame is equipped with drainage holes to facilitate the entry and exit of wastewater. It has a good interception effect on the biofilm carrier. However, by only blowing air onto the inner wall of the bottom of the filter frame with a blower, it is easy to cause uneven airflow and turbulent flow of the biofilm carrier. This results in dead spots of sedimentation at the bottom and corners, low carrier utilization, and the inability to achieve full mixing of the carrier and wastewater by simple aeration alone. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a biofilm reactor for wastewater treatment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A biofilm reactor for wastewater treatment includes a reaction chamber, a base plate, and an intercepting filter frame. A flow guide tube is located at the center of the intercepting filter frame. The outer wall of the flow guide tube has rectangular slots. An annular air pipe is located below the flow guide tube. A nozzle is fixedly installed on the annular air pipe. A conical dispersing block is located at the upper end of the nozzle. A flow guide groove is formed on the outer wall of the conical dispersing block. The rectangular slots are evenly distributed in a spiral direction on the flow guide tube.

[0005] As a further embodiment of this utility model, the interception filter frame is filled with a biofilm carrier, a blower is installed on the base plate by fasteners, and the guide grooves are radially and uniformly distributed on the outer wall of the conical dispersion block.

[0006] As a further embodiment of this utility model, an air inlet pipe is fixedly provided between the blower and the annular air pipe, a locking block is fixedly provided on the inner wall of the intercepting filter frame, and an installation block two is fixedly provided on the outer wall of the guide tube.

[0007] As a further embodiment of this utility model, the second mounting block is connected to the second clamping block by a second bolt, and a support plate is fixedly provided on the inner wall of the reaction chamber.

[0008] As a further embodiment of this utility model, the intercepting filter frame is fitted and connected to the support plate, the outer wall of the intercepting filter frame is fixedly provided with an installation block, and a drain pipe is fixedly provided on one side of the reaction chamber.

[0009] As a further embodiment of this utility model, the mounting block is connected to the support plate by bolts, and a valve is fixedly installed on the drain pipe.

[0010] Compared with the prior art, the present invention has the following beneficial effects: In use, by setting up an annular air pipe and oblique nozzles, and fixing a conical dispersion block above each nozzle, and opening radial guide grooves on the outer wall of the conical dispersion block, the airflow can be forcibly divided to form a uniform vortex. This not only avoids local airflow being too strong or too weak, making the biofilm carrier flow more evenly, but also prevents the carrier from accumulating at the bottom by cooperating with the oblique airflow and guide grooves, effectively increasing the contact area between the carrier and the sewage. At the same time, a guide tube is set in the center of the intercepting filter frame, with obliquely upward spiral rectangular strip holes opened along its outer wall, which can force the carrier to form a circulating flow from rising to sinking. The guide tube can both allow sewage to pass freely and effectively intercept the carrier. The airflow division of the annular air pipe and the forced circulation of the guide tube work together to ensure that the carrier is always in a state of motion, avoiding local biofilm over-thickness or insufficient reaction, thus improving the sewage treatment effect. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of a biofilm reactor for wastewater treatment proposed in this utility model; Figure 2 This is a cross-sectional structural diagram of a biofilm reactor for wastewater treatment proposed in this utility model; Figure 3 This is an enlarged structural diagram of point A of a biofilm reactor for wastewater treatment proposed in this utility model; Figure 4 This is a schematic diagram of the annular gas pipe split structure of a biofilm reactor for wastewater treatment proposed in this utility model; Figure 5 This is a schematic diagram of the disassembled structure of the guide tube of a biofilm reactor for wastewater treatment proposed in this utility model; In the diagram: 1. Reaction chamber; 101. Support plate; 102. Drain pipe; 103. Valve; 104. Mounting block one; 105. Bolt one; 106. Biofilm carrier; 2. Base plate; 201. Air inlet pipe; 202. Annular air pipe; 203. Nozzle; 3. Interceptor filter frame; 301. Clamping block; 302. Bolt two; 303. Mounting block two; 4. Guide tube; 5. Conical dispersion block; 6. Rectangular strip hole; 7. Guide groove; 8. Blower. Detailed Implementation

[0012] 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.

[0013] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] Reference Figures 1-5 A biofilm reactor for wastewater treatment includes a reaction chamber 1, a base plate 2, and an intercepting filter frame 3. A guide tube 4 is provided at the center of the interior of the intercepting filter frame 3. Rectangular strip holes 6 are provided on the outer wall of the guide tube 4. An annular air pipe 202 is provided below the guide tube 4. A nozzle 203 is fixedly installed on the annular air pipe 202. A conical dispersion block 5 is provided at the upper end of the nozzle 203. A guide groove 7 is opened on the outer wall of the conical dispersion block 5. The rectangular strip holes 6 are evenly distributed in a spiral direction on the guide tube 4.

[0016] In operation, wastewater is first transported into filter 3, and then blower 8 is started. The airflow is ejected at high speed through the set of inclined nozzles 203 on the annular air pipe 202, precisely impacting the corresponding conical dispersion block 5 above. Under the forced flow guidance of its radial guide groove 7, it is evenly divided into multiple fine streams, thus forming a strong rotating turbulent flow. This forcefully pushes the biofilm carrier 106 in the intercepting filter frame 3, causing it to move in a spiral trajectory. After rising to the top and spreading, it naturally falls back along the outer wall of the filter frame, thus constructing a continuous circulating flow system with internal rising and external sinking. Throughout the treatment process, the tangential airflow of the inclined nozzles 203 and the vertical lifting force of the guide tube 4 work closely together to keep the biofilm carrier in a uniform suspension state, promoting full contact and efficient reaction between the wastewater and the biofilm on the carrier surface. After the wastewater is purified, it is discharged and collected through the drain pipe 102. The entire process is efficient and continuous, achieving deep purification treatment of wastewater.

[0017] In this embodiment, the interception filter frame 3 is filled with a biofilm carrier 106, a blower 8 is installed on the bottom plate 2 by fasteners, and the guide grooves 7 are radially and uniformly distributed on the outer wall of the conical dispersion block 5.

[0018] In use, the nozzle 203 is designed at an angle and is evenly distributed on the annular air pipe 202. Its spray direction is at a certain angle to the horizontal plane, so that the airflow impacts the guide groove 7 of the upper conical dispersion block 5 in a tangential direction, forming a rotating turbulent flow to drive the biofilm carrier 106 to flow.

[0019] In this embodiment, an air inlet pipe 201 is fixedly provided between the blower 8 and the annular air pipe 202, a locking block 301 is fixedly provided on the inner wall of the intercepting filter frame 3, and an installation block 303 is fixedly provided on the outer wall of the guide tube 4.

[0020] In use, multiple radial guide grooves 7 are evenly distributed on the outer wall of the conical dispersion block 5, which can forcibly divide the concentrated airflow ejected from the nozzle 203 into multiple fine streams that diffuse along the grooves and are evenly dispersed into the interception filter frame 3, thereby promoting the uniform flow of the biofilm carrier 106.

[0021] In this embodiment, mounting block 303 is connected to clamping block 301 by bolt 302, and support plate 101 is fixedly provided on the inner wall of reaction chamber 1.

[0022] During use, the biofilm carrier 106 floats inside the interception filter frame 3. Its surface and inner wall pores can adsorb and cultivate aerobic and anaerobic bacteria to form a biofilm with high degradation capacity. Under the swirling of the annular air pipe 202 and the circulation of the guide tube 4, it continuously and fully contacts the sewage to carry out nitrification and denitrification reactions to remove ammonia nitrogen and organic matter.

[0023] In this embodiment, the interceptor filter frame 3 is fitted with the support plate 101, the outer wall of the interceptor filter frame 3 is fixedly provided with the mounting block 104, and the side of the reaction box 1 is fixedly provided with the drain pipe 102.

[0024] In use, the guide tube 4 is a hollow cylindrical structure, located at the center of the interception filter frame 3. Its outer wall has evenly distributed obliquely upward rectangular slots 6 along the spiral direction. These slots allow sewage to enter and exit freely while effectively intercepting the biofilm carrier 106. The low-pressure suction force formed causes the carrier and sewage to spiral upward in the tube and diffuse from the top and sink along the outer wall of the guide tube 4, thereby achieving circulation.

[0025] In this embodiment, the mounting block 104 is connected to the support plate 101 by bolts 105, and a valve 103 is fixedly installed on the drain pipe 102.

[0026] When in use, the blower 8 is model JFA30-0.6. The inner wall of the interceptor filter frame 3 is fixed with a clip 301, which is used to connect with the second mounting block 303 on the outer wall of the guide tube 4 by bolt 302. The outer mounting block 104 is firmly connected to the support plate 101 by bolt 105.

[0027] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: When in use, sewage is transported into the interception filter frame 3, the blower 8 is started, and the airflow is ejected at high speed through the sets of inclined nozzles 203 on the annular air pipe 202, impacting the corresponding conical dispersion block 5 above. Under the action of the radial guide groove 7, the airflow is evenly divided and forms a rotating turbulent flow, which pushes the biofilm carrier 106 in the interception filter frame 3 to make a spiral motion. After diffusing at the top, it naturally falls back along the outer wall of the filter frame, forming a continuous internal rising and external sinking circulation flow. During this process, the tangential airflow of the inclined nozzle 203 and the vertical lifting force of the guide tube 4 cooperate with each other to ensure that the carrier is always in a uniform suspension state, and the sewage and the biofilm on the surface of the carrier fully contact and react. After purification, the sewage is finally discharged and collected through the drain pipe 102.

[0028] 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.

Claims

1. A biofilm reactor for wastewater treatment, comprising a reaction chamber (1), a bottom plate (2), and a filter frame (3), characterized in that: The interceptor filter frame (3) has a flow guide tube (4) at its inner center. The outer wall of the flow guide tube (4) has rectangular strip holes (6). The bottom of the flow guide tube (4) has an annular air pipe (202). A nozzle (203) is fixedly installed on the annular air pipe (202). A conical dispersion block (5) is provided at the upper end of the nozzle (203). A flow guide groove (7) is opened on the outer wall of the conical dispersion block (5). The rectangular strip holes (6) are evenly distributed in a spiral direction on the flow guide tube (4).

2. The biofilm reactor for wastewater treatment according to claim 1, characterized in that, The interception filter frame (3) is filled with a biofilm carrier (106), and a blower (8) is installed on the base plate (2) by fasteners. The guide groove (7) is radially and uniformly distributed on the outer wall of the conical dispersion block (5).

3. The biofilm reactor for wastewater treatment according to claim 2, characterized in that, An air inlet pipe (201) is fixed between the blower (8) and the annular air pipe (202), a locking block (301) is fixed on the inner wall of the interceptor filter frame (3), and an installation block (303) is fixed on the outer wall of the guide tube (4).

4. A biofilm reactor for wastewater treatment according to claim 3, characterized in that, The second mounting block (303) is connected to the second bolt (302) and the third clamp (301). The inner wall of the reaction chamber (1) is fixedly provided with a support plate (101).

5. A biofilm reactor for wastewater treatment according to claim 4, characterized in that, The interception filter frame (3) is fitted and connected to the support plate (101). The outer wall of the interception filter frame (3) is fixedly provided with an installation block (104). A drain pipe (102) is fixedly provided on one side of the reaction box (1).

6. A biofilm reactor for wastewater treatment according to claim 5, characterized in that, The mounting block (104) is connected to the support plate (101) by bolt (105), and a valve (103) is fixedly installed on the drain pipe (102).

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