Device for relieving foam and reducing carbon source loss behind water inlet weir of biochemical pool
By installing a device with porous media plate and flow guide behind the biochemical weir of the sewage treatment plant, the problems of foam generation and carbon source loss are solved, and effective carbon source protection and automation and environmental protection of sewage treatment are achieved.
Patent Information
- Application Number
- CN202420483020.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-13
AI Technical Summary
The existing technology is difficult to effectively solve the problems of foam generation and carbon source loss caused by the expansion of water level difference in front and after the biochemical weir in sewage treatment plants without increasing energy consumption and operating costs.
A device is designed, including a shell, a porous media plate and a flow guide tube. The shell is installed on the downstream side wall of the biochemical pool water distribution weir, the porous media plate is installed on the inner wall of the shell, and the flow guide tube connects to the bottom end of the shell, which is used to alleviate foam generation and reduce carbon source loss.
Through the barrier and absorption of the porous dielectric plate, the generation of foam is suppressed, the carbon source loss is reduced, and the water surface disturbance and the increase in dissolved oxygen concentration are avoided, thus achieving the automation of the device and the economical applicability of the green and environmentally friendly.
Smart Images
Figure CN222700113U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a device for alleviating foam and reducing carbon source loss after a water inlet weir in a biochemical pool. Background Art
[0002] The construction scale of sewage treatment plants needs to take into account the urban development planning and make predictions and demonstrations on the development situation. Generally speaking, the construction scale of sewage treatment plants is slightly ahead of schedule, and the actual operation scale is lower than the construction scale; and the amount of water treated per hour is also different due to the influence of water use time.
[0003] Under this condition, the water level difference between the weir and the weir of the biochemical pool of the sewage treatment plant will increase. When sewage enters the sewage treatment structure through the water distribution weir, a large drop will occur. Because there are a large number of surfactants in the sewage, a large drop will produce a lot of foam, affecting the normal operation of the sewage treatment plant. In addition, a large drop will violently disturb the water surface, increase the dissolved oxygen concentration of the influent, and aggravate the loss of carbon source in the anoxic zone of the biochemical pool.
[0004] At present, the foam generated in sewage treatment plants is generally solved by spraying water or adding additional chemicals. These methods will inevitably cause energy loss and increase in operating costs. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a device for alleviating foam and reducing carbon source loss behind the water inlet weir of a biochemical pool, which can alleviate foam behind the water inlet weir of the biochemical pool and reduce carbon source loss.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool, comprising a housing;
[0007] The shell is installed on the side wall of the biochemical pool water distribution weir body close to the downstream side. The top of the shell is flush with the top of the biochemical pool water distribution weir body. The top of the shell is open. Multiple porous medium plates are installed inside the shell. The bottom of the shell is connected to a guide pipe.
[0008] Preferably, the plurality of porous medium plates are divided into two parts, the two parts are respectively mounted on two opposite inner walls of the shell, and the porous medium plates on the two opposite inner walls of the shell are arranged alternately in the vertical direction.
[0009] Preferably, the porous medium plate is arranged to be tilted downward at one end away from the inner wall of the shell.
[0010] Preferably, the length of the porous medium plate is the same as the length of the outer shell, and the width of the porous medium plate is greater than 1 / 2 of the width of the outer shell.
[0011] Preferably, the porous medium plate is mounted on the inner wall of the housing through a bracket.
[0012] Preferably, the porous medium plate is a hydrophilic material plate.
[0013] Preferably, the minimum pore diameter of the porous medium plate is 10 mm.
[0014] Preferably, an external fixing bracket is further included. The external fixing bracket is of an L-shaped structure. One end of the external fixing bracket is fixed to the housing, and together they form an inverted "凵" - shaped structure and are hung on the top of the water distribution weir body of the biochemical pool.
[0015] Preferably, the diversion pipe includes a straight pipe and an elbow. The bottom end of the housing is communicated with the inlet of the elbow through the straight pipe, and the outlet of the elbow extends below the water level behind the weir.
[0016] Preferably, a diversion slope is provided at the inner bottom of the housing, and the lowest point of the diversion slope is communicated with the straight pipe.
[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0018] 1. For a device for relieving foam and reducing carbon source loss behind the inlet weir of a biochemical pool provided by the present utility model, through reasonable setting of the component structure, the sewage in front of the weir flows through the device when it翻过 the weir. Through the obstruction of multiple porous medium plates in the housing, the potential energy of the sewage is continuously consumed, the flow rate of the sewage is retarded, and the violent collision with the sewage behind the weir is hindered, thereby relieving the generation of foam.
[0019] 2. For a device for relieving foam and reducing carbon source loss behind the inlet weir of a biochemical pool provided by the present utility model, when the sewage in front of the weir flows through the device, it will collide with multiple porous medium plates in the housing. Since the porous medium plates are made of hydrophilic materials and have a minimum pore diameter of 10 mm and a large specific surface area, the foam generated during the collision will be absorbed by the porous medium plates, thereby inhibiting the generation of foam during the flow of the sewage in front of the weir through the device.
[0020] 3. For a device for relieving foam and reducing carbon source loss behind the inlet weir of a biochemical pool provided by the present utility model, the minimum pore diameter of the porous medium plates in the device is 10 mm, which is greater than or equal to the spacing of the fine grids in the sewage treatment plant and is arranged obliquely, which can ensure that the porous medium plates are not easily blocked.
[0021] 4. For a device for relieving foam and reducing carbon source loss behind the inlet weir of a biochemical pool provided by the present utility model, the outlet of the elbow is located below the water level behind the weir, which can avoid the violent disturbance of the incoming sewage to the water surface behind the weir, relieve the rise of the dissolved oxygen concentration in the water level behind the weir caused by the water surface disturbance, ensure a lower dissolved oxygen level of the sewage behind the weir, and thus reduce the loss of carbon source in the anoxic zone.
[0022] 5. The utility model provides a device for alleviating foam and reducing carbon source loss behind the water inlet weir of a biochemical pool. With the help of an external fixing bracket of the device and relying on the device's own gravity, it is fixed on the weir, which is easy to install and disassemble.
[0023] 6. The utility model provides a device for alleviating foam and reducing carbon source loss after the water inlet weir of the biochemical pool. It does not require external power or additional dosage of chemicals, and is green, environmentally friendly, and economical. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A schematic diagram of the side structure of a device for alleviating foam and reducing carbon source loss behind a water inlet weir in a biochemical pool provided by an embodiment of the utility model;
[0025] Figure 2 A schematic diagram of the top view of a device for alleviating foam and reducing carbon source loss after a water inlet weir in a biochemical pool provided by an embodiment of the utility model;
[0026] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in FIG.
[0027] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure at BB in FIG.
[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0029] 1. Biochemical pool water distribution weir; 2. Outer shell; 3. External fixing bracket; 4. Porous medium plate; 5. Bracket; 6. Straight pipe; 7. Elbow. DETAILED DESCRIPTION
[0030] The present invention will be further described in detail below in conjunction with specific embodiments so that those skilled in the art can understand the present invention more clearly.
[0031] It should be noted that, unless otherwise clearly specified and limited, 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 integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.
[0032] Example 1
[0033] This embodiment provides a device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool, comprising a housing 2;
[0034] The shell 2 is installed on the side wall of the water distribution weir 1 of the biochemical pool near the downstream side. The size of the shell 2 can be 20 cm wide, 40 cm deep, and 200n cm long, where n is a positive integer, and the length of the shell 2 can be slightly smaller than the width of the weir. The top of the shell 2 is flush with the top of the water distribution weir 1 of the biochemical pool. The top of the shell 2 is open, and a plurality of porous medium plates 4 are installed inside the shell 2. The bottom of the shell 2 is connected to a guide pipe.
[0035] It can be understood that the shell 2 is fitted with the biochemical pool water distribution weir 1, and the sewage upstream of the biochemical pool water distribution weir 1 can flow into the interior from the top opening of the shell 2 after crossing the weir. Since the porous medium plate 4 can intercept the sewage to a certain extent, the sewage will experience multiple collisions and penetrations during the process of falling inside the shell 2, so that the potential energy of the sewage is continuously consumed, and finally discharged from the diversion pipe and enter the water body behind the weir.
[0036] Therefore, the device provided in this embodiment changes the violent collision between the original sewage in front of the weir and the sewage behind the weir through the reasonable design of the component structure, inhibits the generation of foam behind the weir, and also avoids the reoxygenation of the surface layer of the water behind the weir caused by the collision, reducing the loss of carbon source in the anoxic zone. The whole process does not require manpower, external power and additional agents, and can be fully automated. The device is generally an integrated design, easy to disassemble and assemble, and can be taken out at any time during daily use, without hindering the normal use and maintenance of the weir and the biochemical pool.
[0037] In this embodiment, the plurality of porous medium plates 4 are divided into two parts, which are respectively mounted on two opposite inner walls of the housing 2, and the porous medium plates 4 on the two opposite inner walls of the housing 2 are arranged alternately in the vertical direction. Figure 3 As shown, three porous medium plates 4 are arranged in the shell 2, and the three porous medium plates 4 are divided into two on the left side and one on the right side, the two on the left side are installed on the left inner wall of the shell 2, and the one on the right side is installed on the right inner wall of the shell 2, and the one on the right side is located between the two on the left side, so that when the sewage flows downward inside the shell 2, it will pass through the porous medium plate 4 on the upper left side, the porous medium plate 4 on the right side, and the porous medium plate 4 on the lower left side in sequence, and finally flow out of the shell 2. In this process, the sewage can be infiltrated through multiple small falls, so that the potential energy of the sewage is continuously consumed.
[0038] The minimum pore size of the porous medium plate 4 is 10 mm, which is greater than or equal to the bar spacing of the sewage treatment fine grid, so that pollutants in the sewage can be prevented from being retained and blocked in the porous medium plate 4.
[0039] The porous medium plate 4 is arranged to be tilted downward at one end away from the inner wall of the housing 2. Figure 3As shown, the right end of the porous medium plate 4 on the left side slopes downward, and the left end of the porous medium plate 4 on the right side slopes downward. In this way, the pollutants on the surface layer of the porous medium plate 4 can flow down along the porous medium plate 4 under the continuous scouring of the sewage in front of the weir, thereby alleviating the blockage of the porous medium plate 4.
[0040] As Figure 2 shown, the length of the porous medium plate 4 is the same as the length of the outer shell 2, and the width of the porous medium plate 4 is greater than 1 / 2 of the width of the outer shell 2. This can prevent some sewage from escaping through the gaps between the porous medium plates 4.
[0041] The porous medium plate 4 can be detachably installed on the inner wall of the outer shell 2 through a bracket 5, which is convenient for replacement or installation.
[0042] The porous medium plate 4 is a hydrophilic material plate. The sewage in front of the weir enters the interior of the outer shell 2 and collides slightly with the porous medium plate 4. Since the porous medium plate 4 is made of a hydrophilic material, the foam generated during the collision is continuously absorbed by the porous medium plate 4, thereby inhibiting the generation of a large amount of foam in the outer shell 2 by the sewage in front of the weir.
[0043] Embodiment 2
[0044] On the basis of Embodiment 1, the device provided in this embodiment further includes an external fixing bracket 3. The external fixing bracket 3 is of an L-shaped structure. One end of the external fixing bracket 3 is fixed to the outer shell 2, and they jointly form an inverted "U" - shaped structure that is hung on the top of the biochemical pool water distribution weir body 1.
[0045] For example, as Figure 2 shown, the device provided in this embodiment may include three such external fixing brackets 3. The three external fixing brackets 3 are arranged at intervals and are all fixed to the outer shell 2. The outer shell 2 and the external fixing brackets 3 are closely attached to the weir body by their own gravity.
[0046] The external fixing bracket 3 includes a horizontal plate and a vertical plate. The length of the horizontal plate is slightly greater than the width of the biochemical pool water distribution weir body 1. The horizontal plate is attached to the top of the biochemical pool water distribution weir body 1, and the vertical plate is attached to the side wall of the biochemical pool water distribution weir body 1 near the upstream side. The length of the vertical plate is 1 / 3 - 2 / 3 of the depth of the outer shell 2, which can ensure sufficient supporting force and save materials at the same time.
[0047] Embodiment 3
[0048] On the basis of Embodiment 1, in this embodiment, the diversion pipe includes a straight pipe 6 and a 90° elbow 7. The bottom end of the outer shell 2 is connected to the inlet of the elbow 7 through the straight pipe 6, and the outlet of the elbow 7 extends below the water level behind the weir.
[0049] For example, if Figure 4 As shown, a plurality of elbows 7 are provided below the housing 2, and a plurality of outlets are provided at the bottom of the housing 2, and the plurality of outlets correspond to the plurality of elbows 7 one by one, and the outlets are connected to the corresponding inlets of the elbows 7 through the straight pipes 6. In this way, the sewage in the housing 2 can be discharged through the outlets of the elbows 7, and the plurality of elbows 7 can prevent the accumulation of sewage inside the housing 2.
[0050] The length of the straight pipe 6 can be flexibly adjusted according to the water level behind the weir to ensure that the outlet of the elbow 7 is below the water level behind the weir, so as to avoid the water surface disturbance of the sewage in front of the weir on the sewage behind the weir, thereby slowing down the surface reoxygenation of the water body behind the weir, so as to reduce the carbon source loss of the sewage behind the weir.
[0051] The bottom of the shell 2 is provided with a diversion slope, and the lowest point of the diversion slope is connected to the straight pipe 6. Under the effect of the slope, the sewage in the shell 2 is collected, which can prevent the phenomenon of sewage residue at the bottom of the shell 2.
[0052] The mechanisms, components and parts not specifically described in the present invention are all existing structures in the prior art and can be directly purchased from the market.
[0053] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0054] The above is only a preferred embodiment of the utility model, and is not intended to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool, characterized in that: Comprising a housing (2); The housing (2) is installed on the side wall of the biochemical pond water distribution weir body (1) near the downstream side. The top end of the housing (2) is flush with the top end of the biochemical pond water distribution weir body (1). The top end of the housing (2) is open. A plurality of porous medium plates (4) are installed inside the housing (2). The bottom end of the housing (2) is communicated with a diversion pipe.
2. A device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool according to claim 1, characterized in that: The plurality of porous medium plates (4) are divided into two parts, and the two parts are respectively installed on two opposite inner walls of the housing (2). The porous medium plates (4) on the two opposite inner walls of the housing (2) are arranged alternately at intervals in the vertical direction.
3. A device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool according to claim 2, characterized in that: One end of the porous medium plate (4) away from the inner wall of the housing (2) is inclined downward.
4. The device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool according to claim 2, characterized in that: The length of the porous medium plate (4) is the same as the length of the housing (2), and the width of the porous medium plate (4) is greater than 1 / 2 of the width of the housing (2).
5. The device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool according to claim 1, characterized in that: The porous medium plate (4) is installed on the inner wall of the housing (2) through a bracket (5).
6. The device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool according to claim 1, characterized in that: The porous medium plate (4) is a hydrophilic material plate.
7. The device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool according to claim 1, characterized in that: The minimum pore diameter of the porous medium plate (4) is 10 mm.
8. The device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool according to claim 1, characterized in that: It further includes an external fixing bracket (3). The external fixing bracket (3) is of an L-shaped structure. One end of the external fixing bracket (3) is fixed to the housing (2), and they jointly form an inverted "U" - shaped structure and are hung on the top end of the biochemical pond water distribution weir body (1).
9. The device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool according to claim 1, characterized in that: The diversion pipe includes a straight pipe (6) and an elbow (7). The bottom end of the housing (2) is communicated with the inlet of the elbow (7) through the straight pipe (6), and the outlet of the elbow (7) extends below the water level behind the weir.
10. The device for alleviating foam and reducing carbon source loss after the water inlet weir of a biochemical pool according to claim 9, characterized in that: A diversion slope is provided at the inner bottom of the housing (2), and the lowest point of the diversion slope is communicated with the straight pipe (6).