A radial flow secondary sedimentation tank

Abstract

This utility model relates to a radial flow secondary sedimentation tank, including a sedimentation tank, a sludge scraper, and a sludge dispersing assembly. The sedimentation tank has an inlet channel; the sludge scraper is located inside the sedimentation tank and has a working bridge; the sludge dispersing assembly is correspondingly arranged to the inlet channel, and includes a connecting shaft and a dispersing brush. One end of the connecting shaft is connected to the working bridge, and the dispersing brush is connected to the other end of the connecting shaft. This utility model, by having the dispersing brush directly act on the floating sludge on the water surface, disrupts the surface tension of the floating sludge, prevents the floating sludge from clumping and accumulating, improves the cleanliness of the inlet channel surface, and reduces the frequency of manual cleaning.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a radial flow secondary sedimentation tank. Background Technology

[0002] Radial flow secondary sedimentation tanks are located downstream of biological treatment structures (activated sludge or biofilm processes) to settle and remove activated sludge or biofilm detached from the biofilm process, and are an important component of biological treatment systems. When the diameter of the secondary sedimentation tank is greater than 20m, a peripheral drive sludge scraper is often used. In actual operation and maintenance of wastewater treatment plants, a large amount of floating sludge often appears on the surface of the secondary sedimentation tank inlet channel due to improper secondary biological treatment and unreasonable sludge discharge from the secondary sedimentation tank. This floating sludge poses the following hazards:

[0003] (1) Affecting the quality of effluent: Floating sludge will be discharged with the effluent, increasing the content of suspended solids (SS) and organic matter, reducing the water quality, and affecting subsequent treatment or discharge standards;

[0004] (2) Equipment blockage: Floating mud may block pipes, pumps and other equipment, increasing maintenance costs and affecting the normal operation of the system;

[0005] (3) Reduced treatment efficiency: Floating sludge will reduce the effective volume of the secondary sedimentation tank, weaken the solid-liquid separation effect, and cause poor sludge return, thus affecting the overall treatment efficiency.

[0006] (4) Increased sludge treatment costs: Increased floating sludge will increase the amount of sludge to be treated, thereby increasing treatment costs and energy consumption;

[0007] (5) Produces foul odor: Floating mud easily releases foul odorous gases such as hydrogen sulfide, which pollute the environment and affect the health of workers;

[0008] (6) Affects sludge return: Floating sludge may cause poor sludge return, affecting the stability of the biological treatment system;

[0009] (7) Damage to the ecosystem: When floating mud enters natural water bodies, it consumes oxygen in the water, threatens the survival of aquatic organisms, and disrupts the ecological balance;

[0010] (8) It affects the perception. Utility Model Content

[0011] Based on the above description, this utility model provides a radial flow secondary sedimentation tank, which aims to solve the problem of a large amount of floating mud appearing on the surface of existing inlet channels.

[0012] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0013] A radial flow secondary sedimentation tank, comprising:

[0014] Sedimentation tank with an inlet channel;

[0015] A sludge scraper is installed inside the sedimentation tank, and the sludge scraper has a working bridge;

[0016] A sludge dispersing component is provided corresponding to the water inlet channel. The sludge dispersing component includes a connecting shaft and a dispersing brush. One end of the connecting shaft is connected to the working bridge, and the dispersing brush is connected to the other end of the connecting shaft.

[0017] Based on the above technical solution, the present invention can be further improved as follows.

[0018] Furthermore, the sludge dispersing component includes a driving member, which is disposed on the working bridge, and one end of the connecting shaft is connected to the output end of the driving member.

[0019] Furthermore, the dispersing brush is configured to be made of nylon or polypropylene.

[0020] Furthermore, it includes a slag discharge assembly, which is disposed in the sedimentation tank. The slag discharge assembly includes a slag discharge hopper and a slag discharge pipe. One end of the slag discharge pipe is connected to the slag discharge hopper, and the slag discharge pipe has multiple slag discharge holes.

[0021] Furthermore, the slag discharge pipe is made of plastic.

[0022] Furthermore, the slag discharge assembly includes an elastic element, which is sleeved on the slag discharge pipe. One end of the elastic element is connected to the slag discharge hopper, and the other end of the elastic element is connected to the slag discharge hopper.

[0023] Furthermore, it includes a slag collection tank, the slag inlet of which is connected to the slag discharge end of the slag discharge hopper.

[0024] Furthermore, it includes a slag discharge well, the wellhead of which is positioned opposite to the slag discharge end of the slag collection pool.

[0025] Furthermore, the slag discharge well is equipped with a filter screen.

[0026] Furthermore, it includes a spray pipe, which is disposed on the working bridge and has multiple nozzles.

[0027] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0028] (1) This utility model enables the dispersing brush to act directly on the floating mud on the water surface, thereby breaking the surface tension of the floating mud, preventing the floating mud from accumulating and increasing the cleanliness of the water intake channel surface, and reducing the frequency of manual cleaning.

[0029] (2) This utility model significantly improves the efficiency of breaking up floating mud through a dual rotation mode, and is especially suitable for high-concentration floating mud conditions, ensuring effective dispersal and removal of floating mud.

[0030] (3) This utility model can not only achieve slag discharge through the slag discharge pipe, but also the flexible deformation design allows the slag discharge pipe to avoid the passage trajectory of the working bridge, reducing the collision damage rate of the slag discharge pipe. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a cross-sectional view of a radial flow secondary sedimentation tank provided in an embodiment of this utility model;

[0033] Figure 2 This is a top view of a radial flow secondary sedimentation tank provided in an embodiment of the present utility model;

[0034] Figure 3 for Figure 1 Enlarged view of a portion of point A in the middle;

[0035] Figure 4 for Figure 1 Enlarged view of a section at point B in the middle;

[0036] Figure 5 for Figure 2 Enlarged view of a section at point C.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Sedimentation tank; 11. Inlet channel;

[0039] 2. Sludge scraper; 21. Working bridge;

[0040] 3. Sludge dispersing component; 31. Connecting shaft; 32. Dispersing brush;

[0041] 4. Slag discharge assembly; 41. Slag discharge hopper; 42. Slag discharge pipe; 43. Flexible component;

[0042] 5. Slag collection tank;

[0043] 6. Slag discharge well; 61. Filter screen;

[0044] 7. Spray pipe. Detailed Implementation

[0045] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0047] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0048] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0049] Reference Figure 1 and Figure 3 As shown, this utility model provides a technical solution: a radial flow secondary sedimentation tank, including a sedimentation tank 1, a sludge scraper 2, and a sludge dispersing component 3. The sedimentation tank 1 has an inlet channel 11; the sludge scraper 2 is located inside the sedimentation tank 1 and has a working bridge 21; the sludge dispersing component 3 is correspondingly arranged with respect to the inlet channel 11, and the sludge dispersing component 3 includes a connecting shaft 31 and a dispersing brush 32. One end of the connecting shaft 31 is connected to the working bridge 21, and the dispersing brush 32 is connected to the other end of the connecting shaft 31.

[0050] In this embodiment, when the sludge scraper 2 moves, the dispersing brush 32 rotates with the working bridge 21 and contacts the floating mud layer on the water surface of the inlet channel 11, causing the dispersing brush 32 to disperse the floating mud. By having the dispersing brush 32 act directly on the floating mud on the water surface, the surface tension of the floating mud is disrupted, preventing the floating mud from accumulating and agglomerating, improving the surface cleanliness of the inlet channel 11, and reducing the frequency of manual cleaning.

[0051] Reference Figure 1 and Figure 3 As shown, in some embodiments, the sludge dispersing component 3 includes a driving member, which is disposed on the working bridge 21, and one end of the connecting shaft 31 is connected to the output end of the driving member.

[0052] For example, the driving component can be a drive motor, etc.

[0053] In this embodiment, the driving component drives the connecting shaft 31 to rotate, causing the dispersing brush 32 to rotate at high speed while revolving with the working bridge 21, thus forming a spiral crushing path. This dual-rotation mode significantly improves the efficiency of sludge crushing, making it particularly suitable for high-concentration sludge conditions, ensuring effective dispersing and removal of sludge.

[0054] Alternatively, the brush 32 can be configured to be made of nylon or polypropylene.

[0055] In this embodiment, the material exhibits excellent corrosion resistance in wastewater environments and possesses a certain degree of elasticity, allowing it to deform upon contact with floating mud to expand its effective area, while simultaneously avoiding the risk of water pollution caused by rust in traditional steel brushes.

[0056] Reference Figure 2 and Figure 4 As shown, in some embodiments, the radial flow secondary sedimentation tank includes a slag discharge assembly 4, which is disposed in the sedimentation tank 1. The slag discharge assembly 4 includes a slag discharge hopper 41 and a slag discharge pipe 42. One end of the slag discharge pipe 42 is connected to the slag discharge hopper 41, and multiple slag discharge holes are provided on the slag discharge pipe 42.

[0057] In this embodiment, during slag discharge, floating slag enters the slag discharge pipe 42 through the slag discharge hole and reaches the slag discharge hopper 41. When the working bridge 21 travels (e.g., the working bridge 21 rotates counterclockwise) to the area of ​​the slag discharge pipe 42, the working bridge 21 contacts the outer wall of the slag discharge pipe 42 and applies lateral pressure, forcing the slag discharge pipe 42 to bend and deform radially, allowing the working bridge 21 to pass through. When the working bridge 21 moves away from the slag discharge pipe 42, the slag discharge pipe 42 automatically resets. This not only achieves slag discharge, but the flexible deformation design also allows the slag discharge pipe 42 to avoid the passage trajectory of the working bridge 21, reducing the collision damage rate of the slag discharge pipe 42.

[0058] In some embodiments, the slag discharge pipe 42 is configured to be made of plastic. Optionally, the plastic material may be polyvinyl chloride, etc.

[0059] In this embodiment, the material ensures that the slag discharge pipe 42 has a certain strength and can be bent and deformed.

[0060] Reference Figure 1 and Figure 4 As shown, in some embodiments, the slag discharge assembly 4 includes an elastic element 43, which is sleeved on the slag discharge pipe 42. One end of the elastic element 43 is connected to the slag discharge hopper 41, and the other end of the elastic element 43 is connected to the slag discharge hopper 41.

[0061] For example, the elastic element 43 can be a spring or the like.

[0062] In this embodiment, when the slag discharge pipe 42 bends and deforms, it can cause the elastic element 43 to extend and deform. After the working bridge 21 passes, the elastic element 43 causes the slag discharge pipe 42 to return to its original position.

[0063] Reference Figure 1 and Figure 4 As shown, in some embodiments, the radial flow secondary sedimentation tank includes a slag collection tank 5, the slag inlet end of which is connected to the slag discharge end of the slag discharge hopper 41.

[0064] In this embodiment, the slag collection tank 5 can collect the floating slag discharged from the slag discharge hopper 41.

[0065] Reference Figure 1 and Figure 4 As shown, in some embodiments, the radial flow secondary sedimentation tank includes a slag discharge well 6, the wellhead of which is disposed opposite to the slag discharge end of the slag collection tank 5.

[0066] In this embodiment, the slag discharge well 6 can ensure the removal of floating slag.

[0067] Reference Figure 1 and Figure 4 As shown, in some embodiments, a filter screen 61 is provided inside the slag discharge well 6.

[0068] In this embodiment, when the scum falls into the filter screen 61, the filter screen 61 performs solid-liquid separation on the scum for easy processing.

[0069] Reference Figure 1 and Figure 5 As shown, in some embodiments, the radial flow secondary sedimentation tank includes a spray pipe 7, which is disposed on the working bridge 21 and has multiple nozzles.

[0070] In this embodiment, when the working bridge 21 passes through the area of ​​the slag discharge pipe 42, the nozzle sprays water into the area to disperse the floating mud, so as to prevent the floating mud in the area from accumulating and affecting the slag discharge of the slag discharge pipe 42.

[0071] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A radial flow secondary sedimentation tank, characterized in that, include: Sedimentation tank (1) has an inlet channel (11); A sludge scraper (2) is installed in the sedimentation tank (1), and the sludge scraper (2) has a working bridge (21). The sludge dispersing component (3) is provided corresponding to the water inlet channel (11). The sludge dispersing component (3) includes a connecting shaft (31) and a dispersing brush (32). One end of the connecting shaft (31) is connected to the working bridge (21), and the dispersing brush (32) is connected to the other end of the connecting shaft (31).

2. The radial flow secondary sedimentation tank according to claim 1, characterized in that, The sludge dispersing component (3) includes a driving component, which is mounted on the working bridge (21), and one end of the connecting shaft (31) is connected to the output end of the driving component.

3. The radial flow secondary sedimentation tank according to claim 1, characterized in that, The dispersing brush (32) is configured to be made of nylon or polypropylene.

4. The radial flow secondary sedimentation tank according to claim 1, characterized in that, The slag discharge assembly (4) is located in the sedimentation tank (1). The slag discharge assembly (4) includes a slag discharge hopper (41) and a slag discharge pipe (42). One end of the slag discharge pipe (42) is connected to the slag discharge hopper (41), and multiple slag discharge holes are provided on the slag discharge pipe (42).

5. The radial flow secondary sedimentation tank according to claim 4, characterized in that, The slag discharge pipe (42) is made of plastic.

6. The radial flow secondary sedimentation tank according to claim 4, characterized in that, The slag discharge assembly (4) includes an elastic element (43), which is sleeved on the slag discharge pipe (42). One end of the elastic element (43) is connected to the slag discharge hopper (41), and the other end of the elastic element (43) is connected to the slag discharge hopper (41).

7. The radial flow secondary sedimentation tank according to any one of claims 4 to 6, characterized in that, It includes a slag collection tank (5), the slag inlet of which is connected to the slag discharge end of the slag discharge hopper (41).

8. The radial flow secondary sedimentation tank according to claim 7, characterized in that, It includes a slag discharge well (6), the wellhead of which is set opposite to the slag discharge end of the slag collection pool (5).

9. The radial flow secondary sedimentation tank according to claim 8, characterized in that, The slag discharge well (6) is equipped with a filter screen (61).

10. The radial flow secondary sedimentation tank according to claim 1, characterized in that, Includes a spray pipe (7), which is located on the working bridge (21) and has multiple nozzles.

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