Degassing device and sedimentation tank thereof
By using the top and bottom degassing structures arranged in the sedimentation tank in a layered top and bottom degassing structure, the multi-stage degassing of sewage is achieved, which solves the problem of suspended matter floating up and cannot settle, and improves the precipitation effect and effluent water quality.
Patent Information
- Application Number
- CN202421180248.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-28
AI Technical Summary
During the degassing process, existing sedimentation tanks are difficult to effectively remove gas from the surface of suspended matter, resulting in the suspended matter floating up and unable to settle, affecting the precipitation effect.
The top-layer degassing structure and the bottom-layer degassing structure are adopted in a layered manner. The top-layer air collector hood and the bottom-layer air collector hood are arranged in a horizontal direction to achieve multi-stage degassing of sewage.
Through the design of the multi-stage degassing structure, the gas on the surface of the suspended object is effectively removed, and the degassing effect is improved, thereby improving the precipitation effect and effluent water quality.
Smart Images
Figure CN222454622U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to a degassing device and a sedimentation tank thereof. Background Art
[0002] Sedimentation is the process of separating suspended matter in sewage from water under the action of gravity. This process is simple and easy to operate, with good separation effect, and is often an indispensable process in various sewage treatment systems. The sedimentation tank after biological treatment is usually called the secondary sedimentation tank. The function of the secondary sedimentation tank is to separate mud and water, clarify the mixed liquid, concentrate the sludge, and return the separated sludge to the biological treatment section. Its working effect directly affects the concentration of the returned sludge and the effluent quality of the activated sludge treatment system.
[0003] During the actual operation of the secondary sedimentation tank, the air brought into the sedimentation tank by the aeration effect of the activated sludge treatment system, the gas produced by denitrification in the sedimentation tank, and the gas generated by anaerobic reaction attach to the surface of the suspended matter, causing the suspended matter to float up and unable to settle, affecting the sedimentation effect of the sedimentation tank.
[0004] At present, there are vertical flow sedimentation tanks, also known as vertical sedimentation tanks, in which wastewater flows vertically from bottom to top. Water enters the tank from top to bottom through the water inlet pipe located in the center of the tank, and the suspended matter settles into the conical sedimentation hopper at the bottom of the tank. The clarified water flows out from the surrounding overflow weirs.
[0005] No matter which type of sedimentation tank is used, the key is whether the degassing device can achieve a good degassing effect, otherwise, the sedimentation effect will be affected. Therefore, how to further improve the degassing effect of the sedimentation tank is a technical problem that needs to be solved. Utility Model Content
[0006] The purpose of the utility model is to provide a degassing device and a sedimentation tank thereof to solve the problems existing in the above-mentioned prior art. By arranging a top degassing structure and a bottom degassing structure in layers, and staggering the top gas collecting hood and the bottom gas collecting hood in the horizontal direction, multi-stage degassing of sewage can be achieved, the degassing effect can be improved, and then the sedimentation effect can be improved.
[0007] To achieve the above purpose, the utility model provides the following solutions:
[0008] The utility model provides a degassing device, comprising a top-layer degassing structure and a bottom-layer degassing structure which are arranged in layers, the top-layer degassing structure comprising a top-layer air collecting hood and a top-layer exhaust pipe arranged on the top of the top-layer air collecting hood, the bottom-layer degassing structure comprising a bottom-layer air collecting hood and a bottom-layer exhaust pipe arranged on the top of the bottom-layer air collecting hood, the exhaust port of the top-layer exhaust pipe and the exhaust port of the bottom-layer exhaust pipe are both higher than the sewage level, the top-layer air collecting hood is located above the bottom-layer air collecting hood, and the top-layer air collecting hood and the bottom-layer air collecting hood are staggered in the horizontal direction.
[0009] Preferably, the bottom degassing structure is provided with two or more layers, and the bottom gas collecting hoods of the bottom degassing structures of different layers are staggered in the horizontal direction.
[0010] Preferably, the top-layer air collecting hood includes a first flat plate and first guide plates connected to both sides of the first flat plate, the two first guide plates are distributed in a V-shape, and the top-layer exhaust pipe is installed on the first flat plate.
[0011] Preferably, a vertical plate is arranged on the first flat plate, the vertical plate and the first flat plate form a water outlet trough, and a drainage pipe connected to the water outlet trough is arranged on the first flat plate and / or the vertical plate.
[0012] Preferably, a first elbow is provided at the top end of the top exhaust pipe, and a second elbow is provided at the top end of the bottom exhaust pipe, and both the first elbow and the second elbow have downward exhaust ports.
[0013] Preferably, the bottom air collecting hood includes a second flat plate and second guide plates connected on both sides of the second flat plate, the two second guide plates are distributed in a V shape, the bottom exhaust pipe is installed on the second flat plate, and the edge of the second guide plate is located within the projection area of the first guide plate.
[0014] The utility model also provides a sedimentation tank using the degassing device as described above, comprising a tank body and a water inlet center tube, wherein the degassing device is arranged in the tank body, the water inlet center tube penetrates the degassing device, and the water outlet of the water inlet center tube is located below the degassing device.
[0015] Preferably, the water inlet central cylinder comprises a cylinder body and a water inlet pipe connected to a cylinder wall of the cylinder body, and the water inlet pipe penetrates the pool body and leads to the outside of the pool body.
[0016] Preferably, the water inlet central cylinder further comprises a reflecting plate, the reflecting plate is located at the bottom of the cylinder body, and there is a distance between the reflecting plate and the cylinder body for serving as a water outlet.
[0017] Preferably, a sedimentation tank for storing sludge is provided at the bottom of the tank body, and the sedimentation tank is conical or polygonal.
[0018] Compared with the prior art, the utility model has achieved the following technical effects:
[0019] The utility model arranges a top-layer degassing structure and a bottom-layer degassing structure in layers, and the top-layer degassing structure and the bottom-layer degassing structure are respectively provided with a top-layer gas collecting hood and a bottom-layer gas collecting hood, and the top-layer gas collecting hood and the bottom-layer gas collecting hood are staggered in the horizontal direction. When degassing is used, water flows upward, and the top-layer gas collecting hood and the bottom-layer gas collecting hood can realize multi-stage degassing of sewage, remove gas attached to the surface of suspended matter, and the removed gas is discharged through the top-layer exhaust pipe or the bottom-layer exhaust pipe. The suspended matter after degassing settles downward under the action of gravity, which can improve the degassing effect, and then improve the sedimentation effect, and improve the effluent water quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 This is the overall structure diagram of the utility model;
[0022] Figure 2 This is a schematic diagram of the top layer degassing structure of the utility model;
[0023] Figure 3 This is a schematic diagram of the bottom degassing structure of the utility model;
[0024] Figure 4 for Figure 1 Schematic diagram of vertical section;
[0025] Figure 5 This is a schematic diagram of the water inlet center tube of the utility model;
[0026] Figure 6 This is a schematic diagram of the distribution of the top degassing structure and the bottom degassing structure of the utility model;
[0027] Among them, 1. pool body; 2. water inlet center tube; 21. tube body; 22. water inlet pipe; 23. reflector; 3. top degassing structure; 31. water outlet trough; 32. top gas collecting hood; 33. top exhaust pipe; 34. drain pipe; 4. bottom degassing structure; 41. bottom exhaust pipe; 42. bottom gas collecting hood. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] The purpose of the utility model is to provide a degassing device and a sedimentation tank thereof to solve the problems existing in the prior art. By arranging a top-layer degassing structure and a bottom-layer degassing structure in layers, and staggering the top-layer gas collecting hood and the bottom-layer gas collecting hood in the horizontal direction, multi-stage degassing of sewage can be achieved, the degassing effect can be improved, and then the sedimentation effect can be improved.
[0030] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0031] like Figures 1 to 6 As shown, the utility model provides a degassing device, including a top degassing structure 3 and a bottom degassing structure 4 arranged in layers, the top degassing structure 3 is located above the bottom degassing structure 4, and the bottom degassing structure 4 can be arranged in one or more layers, and the top degassing structure 3 and the bottom degassing structure 4 of each layer are laid according to the size of the format of the sedimentation tank, and at least one top degassing structure 3 is arranged, and at least one bottom degassing structure 4 is arranged. The top degassing structure 3 includes a top gas collecting hood 32 and a top exhaust pipe 33 arranged on the top of the top gas collecting hood 32, and the gas degassed by the top gas collecting hood 32 is collected in the top exhaust pipe 33 for discharge. The bottom degassing structure 4 includes a bottom gas collecting hood 42 and a bottom exhaust pipe 41 arranged on the top of the bottom gas collecting hood 42, and the gas degassed by the bottom gas collecting hood 42 is collected in the bottom exhaust pipe 41 for discharge. The exhaust port of the top exhaust pipe 33 and the exhaust port of the bottom exhaust pipe 41 are both higher than the sewage level, so that the removed gas can be discharged smoothly. The top-layer gas collecting hood 32 is located above the bottom-layer gas collecting hood 42. In the sedimentation tank, sewage flows from bottom to top. The flowing sewage first passes through one or more layers of the bottom-layer gas collecting hood 42 for degassing, and then passes through the top-layer gas collecting hood 32 for degassing. Finally, the degassed sewage is discharged. When discharging sewage, the water flow can be collected by a water collecting trough. The water collecting trough can be a water outlet trough 31 set on the top of the top-layer degassing structure 3, or other water collection and water outlet forms can be used. The water collecting trough is set in other areas of the sedimentation tank (such as the inner wall of the sedimentation tank or a position close to the inner wall). The top-layer gas collecting hood 32 and the bottom-layer gas collecting hood 42 are staggered in the horizontal direction. The sewage degassed by the bottom-layer gas collecting hood 42 will be degassed by the top-layer gas collecting hood 32 again, which can improve the degassing effect on the sewage.
[0032] The utility model arranges a top-layer degassing structure 3 and a bottom-layer degassing structure 4 in layers. The top-layer degassing structure 3 and the bottom-layer degassing structure 4 are respectively provided with a top-layer gas collecting hood 32 and a bottom-layer gas collecting hood 42. The top-layer gas collecting hood 32 and the bottom-layer gas collecting hood 42 are staggered in the horizontal direction. When degassing is used, water flows upward. The top-layer gas collecting hood 32 and the bottom-layer gas collecting hood 42 can realize multi-stage degassing of sewage, remove gas attached to the surface of suspended matter, and the removed gas is discharged by the top-layer exhaust pipe 33 or the bottom-layer exhaust pipe 41. The suspended matter after degassing settles downward under the action of gravity, which can improve the degassing effect, and then improve the sedimentation effect, and improve the effluent water quality.
[0033] Furthermore, the bottom degassing structure 4 can be provided with two or more layers. In this case, the bottom gas collecting hoods 42 of different layers of the bottom degassing structures 4 are staggered in the horizontal direction. Thus, the bottom gas collecting hoods 42 of the lower layer and the bottom gas collecting hoods 42 of the upper layer can perform multi-stage degassing, thereby further enhancing the degassing effect.
[0034] Combination Figure 2 As shown, the top-level gas collecting hood 32 includes a first flat plate and first guide plates connected to both sides of the first flat plate. The two first guide plates are arranged in a V-shape. The V-shape arrangement can not only facilitate gas collection, but also facilitate the drop of suspended matter after degassing. A top-level exhaust pipe 33 is installed on the first flat plate. The sewage is degassed under the action of the first guide plates arranged in the V-shape. The degassed gas is collected at the first flat plate and discharged through the top-level exhaust pipe 33.
[0035] Furthermore, a vertical plate is provided on the first flat plate, and the vertical plate and the first flat plate form a water outlet trough 31. A drainage pipe 34 connected to the water outlet trough 31 is provided on the first flat plate and / or the vertical plate. After the sewage enters the water outlet trough 31, it is discharged through the drainage pipe 34. When the degassing device is set in the sedimentation tank, the drainage pipe 34 can pass through the side wall of the sedimentation tank and lead to the outside of the sedimentation tank.
[0036] like Figure 2 and Figure 3 As shown, a first elbow is provided at the top end of the top exhaust pipe 33, and a second elbow is provided at the top end of the bottom exhaust pipe 41. Both the first elbow and the second elbow have downward exhaust ports. The arrangement of the above exhaust ports can prevent impurities and dirt from entering the top exhaust pipe 33 or the bottom exhaust pipe 41, thereby ensuring smooth exhaust.
[0037] Combination Figure 3As shown, the bottom gas collecting hood 42 includes a second flat plate and second guide plates connected to both sides of the second flat plate. The two second guide plates are distributed in a V-shaped shape. The V-shaped distribution can not only facilitate gas collection, but also facilitate the falling of suspended matter after degassing. The bottom exhaust pipe 41 is installed on the second flat plate. The sewage is degassed under the action of the second guide plates distributed in the V-shaped shape. The degassed gas is collected at the second flat plate and discharged through the bottom exhaust pipe 41. When the top gas collecting hood 32 and the bottom gas collecting hood 42 are arranged at intervals, the edge of the second guide plate can be located in the projection area of the first guide plate. At this time, the sewage degassed by the bottom gas collecting hood 42 can flow into the lower part of the top gas collecting hood 32 for degassing again, further ensuring the degassing effect. Similarly, for the bottom gas collecting hood 42 arranged in multiple layers, the edge of the second guide plate of the lower layer can be located in the projection area of the second guide plate of the adjacent upper layer. At this time, the sewage degassed by the bottom gas collecting hood 42 of the lower layer can flow into the lower part of the bottom gas collecting hood 42 of the upper layer for degassing again, further ensuring the degassing effect.
[0038] like Figures 1 to 6 As shown, the utility model also provides a sedimentation tank using the degassing device as described above, including a tank body 1 and a water inlet center cylinder 2. The tank body 1 is the main body of the sedimentation tank, and has a space for accommodating sewage. The degassing device is arranged in the tank body 1, and the water inlet center cylinder 2 penetrates the degassing device. The water outlet of the water inlet center cylinder 2 is located below the degassing device. The water inlet of the water inlet center cylinder 2 can be arranged on the top or on the side, as long as the purpose of the water inlet center cylinder 2 can be achieved. The purpose of the water inlet center cylinder 2 is to replenish sewage to the tank body 1 and pass the sewage into the bottom of the degassing device so that the sewage can flow from bottom to top through the degassing device.
[0039] Combination Figure 5 As shown, the water inlet center cylinder 2 includes a cylinder body 21 and a water inlet pipe 22 connected to the cylinder wall of the cylinder body 21. The water inlet pipe 22 passes through the pool body 1 and leads to the outside of the pool body 1. After the water inlet pipe 22 is connected to the water supply device (which can be the previous tank or pool of the sewage treatment system, or it can be a sewage pump), the sewage is supplied to the pool body 1.
[0040] The water inlet center cylinder 2 also includes a reflective plate 23, which is located at the bottom of the cylinder 21. There is a distance between the reflective plate 23 and the cylinder 21 that is used as a water outlet. When sewage is supplied to the cylinder 21 through the water inlet pipe 22, the sewage flows downward in the cylinder 21. After being reflected by the reflective plate 23, the sewage begins to flow upward outside the cylinder 21, and is then discharged after being degassed by the degassing device.
[0041] Combination Figure 4As shown, a sedimentation tank for storing sludge is provided at the bottom of the tank body 1. The sedimentation tank can be in various forms such as a cone or a polygonal pyramid. The falling suspended matter is temporarily deposited in the sedimentation tank, and the sediment in the sedimentation tank is subsequently discharged from the tank body 1 by a sludge pump or the like.
[0042] The working principle of the utility model is as follows:
[0043] Sewage enters the pool body 1 from the water inlet center tube 2. Sewage flows from bottom to top in the pool body 1. Part of the suspended matter settles to the bottom of the pool and concentrates under the action of gravity. Suspended matter with gas attached to the surface cannot settle and floats up with the flow of water. After the degassing action of the bottom degassing structure 4, the gas is separated from the suspended matter, and the gas is discharged into the atmosphere from the bottom exhaust pipe 41. After the suspended matter has no gas attached, it begins to settle under the action of gravity, and concentrates after settling to the bottom of the pool, and the sewage continues to flow upward. After passing through the bottom degassing structure 4, some of the suspended matter still has gas attached to it, and continues to float up with the water flow. After the degassing action of the top degassing structure 3, the gas is separated from the suspended matter, and the gas is discharged into the atmosphere from the top exhaust pipe 33. After the suspended matter has no gas attached, it begins to settle under the action of gravity, and concentrates after settling to the bottom of the pool. After passing through the top degassing structure 3, there is basically no suspended matter in the sewage, and the sewage continues to flow upward and gathers in the outlet tank 31, and is discharged from the pool body 1 from the drain pipe 34. After the suspended matter is concentrated at the bottom of the tank, the concentrated sludge is discharged from the tank body 1.
[0044] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A degassing device, characterized in that: It includes a top-layer degassing structure and a bottom-layer degassing structure arranged in layers, the top-layer degassing structure includes a top-layer air collecting hood and a top-layer exhaust pipe arranged on the top of the top-layer air collecting hood, the bottom-layer degassing structure includes a bottom-layer air collecting hood and a bottom-layer exhaust pipe arranged on the top of the bottom-layer air collecting hood, the exhaust port of the top-layer exhaust pipe and the exhaust port of the bottom-layer exhaust pipe are both higher than the sewage level, the top-layer air collecting hood is located above the bottom-layer air collecting hood, and the top-layer air collecting hood and the bottom-layer air collecting hood are staggered in the horizontal direction.
2. The degassing device according to claim 1, characterized in that: The bottom degassing structure is provided with two or more layers, and the bottom gas collecting hoods of the bottom degassing structures of different layers are arranged alternately in the horizontal direction.
3. The degassing device according to claim 1 or 2, characterized in that: The top-level air collecting hood includes a first flat plate and first guide plates connected to both sides of the first flat plate, the two first guide plates are distributed in a V-shape, and the top-level exhaust pipe is installed on the first flat plate.
4. The degassing device according to claim 3, characterized in that: A vertical plate is arranged on the first flat plate, and the vertical plate and the first flat plate form a water outlet trough. A drainage pipe connected to the water outlet trough is arranged on the first flat plate and / or the vertical plate.
5. The degassing device according to claim 1 or 2, characterized in that: A first elbow is arranged at the top end of the top exhaust pipe, and a second elbow is arranged at the top end of the bottom exhaust pipe. Both the first elbow and the second elbow have downward exhaust ports.
6. The degassing device according to claim 3, characterized in that: The bottom air collecting hood includes a second flat plate and second guide plates connected on both sides of the second flat plate, the two second guide plates are distributed in a V shape, the bottom exhaust pipe is installed on the second flat plate, and the edge of the second guide plate is located in the projection area of the first guide plate.
7. A sedimentation tank using the degassing device according to any one of claims 1 to 6, characterized in that: It comprises a pool body and a water inlet central tube, wherein the degassing device is arranged in the pool body, the water inlet central tube penetrates the degassing device, and the water outlet of the water inlet central tube is located below the degassing device.
8. The sedimentation tank according to claim 7, characterized in that: The water inlet central cylinder comprises a cylinder body and a water inlet pipe connected to the cylinder wall of the cylinder body, and the water inlet pipe penetrates the pool body and leads to the outside of the pool body.
9. The sedimentation tank according to claim 8, characterized in that: The water inlet central cylinder further comprises a reflecting plate, and the reflecting plate is located at the bottom of the cylinder body, and there is a distance between the reflecting plate and the cylinder body for serving as a water outlet.
10. The sedimentation tank according to claim 7, characterized in that: A sedimentation tank for storing sludge is arranged at the bottom of the tank body, and the sedimentation tank is in a conical or polygonal pyramid shape.