Device for removing anaerobic float sludge

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a device for removing anaerobic float sludge, which comprises an aeration device capable of releasing high-pressure gas, and the high-pressure gas can break bubbles mingled in sludge. Along with the breakage of the bubbles, the sludge wrapped in the bubbles gradually sinks to the bottom of the settling tank under the action of gravity. The process not only can efficiently remove the bubbles in the sludge, but also can promote the separation of the bubbles from the sludge, so that the precipitation efficiency is remarkably improved. And secondly, the position of the aeration device corresponds to the position of the water injection port, and when the sludge is injected into the settling tank from the water injection port, high-pressure gas released by the aeration device passes through the sludge, so that bubbles mixed in the sludge can be effectively crushed, and the sludge wrapped in the bubbles sinks. According to the arrangement mode, bubbles can be eliminated when entering the settling tank, so that the bubble eliminating efficiency is improved, and the overall settling efficiency can be improved at the same time.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment, specifically to a device for removing anaerobic sludge. Background Technology

[0002] In an anaerobic environment, denitrification of sludge produces gases such as nitrogen and nitrous oxide. These gases form bubbles, which encapsulate sludge, causing it to rise to the surface and creating floating sludge. Currently, the main methods for removing floating sludge are chemical agents and manual rinsing.

[0003] One method of removing sludge involves adding chemical agents, such as flocculants and coagulants, to the water containing the sludge. The chemical reaction causes the sludge to agglomerate into larger particles, increasing its weight and causing it to settle. However, the preparation, storage, and application of these chemical agents require professional personnel, increasing labor costs and operational complexity.

[0004] In manual flushing methods, workers need to use handheld high-pressure water guns or other flushing equipment to spray the floating sludge, breaking up air bubbles and causing the sludge to settle. However, this method requires multiple people to work continuously for extended periods, and the flushing effect is greatly affected by factors such as the operator's experience and the force applied, resulting in low processing efficiency.

[0005] These two methods not only consume a lot of manpower and material resources, but also have low processing efficiency and are not suitable for large-scale mud removal operations. Utility Model Content

[0006] The present invention aims to provide a device for removing anaerobic sludge, which can effectively improve the efficiency of sludge removal.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] 1) An anaerobic sludge removal device, comprising a sedimentation tank, wherein the top of the sedimentation tank is provided with a water inlet, the side wall of the sedimentation tank is provided with a water outlet, the water outlet is close to the top of the sedimentation tank, the sedimentation tank is provided with an aeration device for breaking up air bubbles containing sludge by releasing high-pressure gas, the position of the aeration device corresponds to the position of the water inlet, and the side wall of the sedimentation tank is provided with a sludge discharge port, the sludge discharge port is close to the bottom of the sedimentation tank.

[0009] In this invention, a water inlet is provided at the top of the sedimentation tank to facilitate the injection of sludge into the tank for sedimentation. During the sedimentation process, sludge particles in the water gradually settle to the bottom of the tank and are discharged through the sludge discharge port at the bottom. During this process, the number of suspended sludge particles in the water gradually decreases, and the upper layer of water gradually becomes clear, forming a supernatant. A water outlet is provided on the side wall of the sedimentation tank to facilitate the discharge of the supernatant. An aeration device is installed inside the sedimentation tank, which releases high-pressure gas that breaks up air bubbles trapped in the sludge. As the bubbles burst, the sludge encased within them gradually sinks to the bottom of the sedimentation tank under the influence of gravity. This process not only efficiently removes air bubbles trapped in the sludge but also promotes the separation of bubbles from the sludge, thereby significantly improving sedimentation efficiency.

[0010] The aeration device is positioned corresponding to the water inlet. When sludge is injected into the sedimentation tank through the water inlet, the high-pressure gas released by the aeration device travels through the sludge, effectively breaking up air bubbles trapped within it, causing the sludge encased in the bubbles to sink. This design eliminates air bubbles as they enter the sedimentation tank, improving both the efficiency of bubble removal and the overall sedimentation efficiency.

[0011] 2) The anaerobic sludge removal device according to 1), wherein:

[0012] The water inlet is connected to a water inlet pipe that extends to the bottom of the sedimentation tank. The water inlet pipe has an opening facing the bottom of the sedimentation tank. A baffle plate is provided below the opening. The baffle plate is umbrella-shaped, with its upper surface facing the opening of the water inlet pipe and its lower surface facing the aeration device.

[0013] In this invention, an umbrella-shaped baffle is provided below the inlet pipe opening. When sludge is injected into the sedimentation tank through the inlet pipe, the baffle reduces the impact of the sludge on the aeration device, thus preventing damage to the aeration device due to impact. Secondly, the baffle allows the injected sludge to be more evenly distributed in the sedimentation tank, preventing sludge from concentrating in a certain area, thereby ensuring the uniformity and efficiency of the sedimentation process. At the same time, the baffle reduces the amount of air bubbles generated when the sludge is injected, thus preventing excessive air bubbles from affecting the sedimentation efficiency. In addition, the baffle is umbrella-shaped, so when sludge is injected through the inlet pipe and falls onto the baffle, the sludge can quickly slide off the inclined surface of the baffle, preventing sludge from accumulating on the baffle.

[0014] 3) The anaerobic sludge removal device according to 2), wherein:

[0015] The baffle plate has a first support column extending downward in the middle, and the bottom of the first support column is fixedly connected to the aeration device.

[0016] In this invention, a first support column is provided at the center of the baffle plate. The first support column provides support for the baffle plate, ensuring its stability under the impact of silt and preventing deformation or displacement. The bottom of the first support column is fixedly connected to the aeration device, maintaining a stable relative position between the baffle plate and the aeration device. Silt sliding off the baffle plate can accurately pass through the impact area of ​​the aeration device, thereby enabling the aeration device to efficiently break air bubbles in the silt and improve the efficiency of air bubble removal.

[0017] 4) The anaerobic sludge removal device according to 1), wherein:

[0018] The aeration device includes an aeration disc, which is hollow and has a gas pipe inside. The gas pipe is arranged in a ring and its position corresponds to the edge of the baffle plate. Several first air outlets are evenly distributed on the gas pipe and are oriented towards the opening of the water inlet pipe. Several second air outlets are opened on the aeration disc, and the positions of the second air outlets correspond one-to-one with the positions of the first air outlets.

[0019] In this invention, the gas pipe is positioned corresponding to the edge of the baffle plate. Several first air outlets are evenly distributed on the gas pipe, facing the inlet pipe opening. The aeration disc has second air outlets corresponding to the first air outlets. When high-pressure gas from the gas pipe is ejected through the first and second air outlets, this high-pressure gas directly acts on the sludge sliding down from the baffle plate, rapidly breaking up air bubbles trapped within the sludge and improving treatment efficiency. As the bubbles burst, the sludge encased within them gradually sinks to the bottom of the sedimentation tank under gravity. This method eliminates air bubbles upon entering the sedimentation tank, improving not only the efficiency of bubble elimination but also the overall sedimentation efficiency.

[0020] 5) An anaerobic sludge removal device according to 4), wherein:

[0021] The aeration disc has a downward-extending second support column at its center, and the bottom of the second support column is fixedly connected to the inner bottom of the sedimentation tank.

[0022] In this invention, the second support column provides necessary support for the aeration disc, preventing displacement and deformation due to the impact of sludge. Simultaneously, it improves the stability of the aeration disc, ensuring its stability when releasing high-pressure gas.

[0023] 6) An anaerobic sludge removal device according to 3), wherein:

[0024] An air inlet is provided on the gas pipeline, and a flexible hose is connected to the air inlet. The flexible hose extends through the aeration disc and toward the side wall of the sedimentation tank. One end of the flexible hose passing through the sedimentation tank is connected to an air compressor.

[0025] In this invention, an air inlet is provided on the gas pipeline to facilitate the entry of gas into the pipeline. A flexible hose is connected to the air inlet, and one end of the hose, passing through the settling tank, is connected to an air compressor. When the air compressor is started, high-pressure gas can be delivered into the gas pipeline through the hose.

[0026] 7) An anaerobic sludge removal device according to 1), wherein:

[0027] The sludge discharge port is connected to a sludge discharge pipe, and a suction pump is installed on the sludge discharge pipe.

[0028] In this invention, a sludge discharge port is connected to a sludge discharge pipe, and a suction pump is installed on the sludge discharge pipe. The suction pump extracts the sludge from the bottom of the sedimentation tank through the sludge discharge pipe. This method can improve sludge discharge efficiency, reduce the residence time of sludge in the sedimentation tank, and prevent excessive sludge accumulation. At the same time, through continuous suction, it ensures that the sludge in the sludge discharge pipe remains in a flowing state, avoiding pipe blockage caused by sludge deposition.

[0029] Compared with the prior art, the present invention also has the following technical effects:

[0030] In this invention, an aeration device is installed inside the sedimentation tank. This device releases high-pressure gas, which breaks up air bubbles trapped in the sludge. As the bubbles burst, the sludge encased within them gradually sinks to the bottom of the sedimentation tank under the influence of gravity. This process not only efficiently removes air bubbles from the sludge but also promotes the separation of bubbles from the sludge, thus significantly improving sedimentation efficiency. Furthermore, the aeration device is positioned corresponding to the water inlet. When sludge is injected into the sedimentation tank through the inlet, the high-pressure gas released by the aeration device travels through the sludge, effectively breaking up the air bubbles and causing the sludge encased within them to sink. This design eliminates air bubbles as they enter the sedimentation tank, improving both the efficiency of bubble removal and the overall sedimentation efficiency. Attached Figure Description

[0031] Figure 1 This is a cross-sectional view of a device for removing anaerobic floating sludge according to the present invention.

[0032] Figure 2 This is a cross-sectional view of the aeration device in an anaerobic sludge removal device according to the present invention. Detailed Implementation

[0033] The following detailed description illustrates the specific implementation method:

[0034] The reference numerals in the accompanying drawings include: 1. Outlet; 2. Aeration device; 3. Sludge discharge port; 4. Inlet pipe; 5. Baffle plate; 6. First support column; 7. Aeration disc; 8. Gas pipe; 9. First air outlet; 10. Second support column; 11. Air inlet; 12. Hose; 13. Air compressor; 14. Sludge discharge pipe; 15. Suction pump.

[0035] See the example. Figure 1 As shown in the figure, an anaerobic sludge removal device in this embodiment includes a sedimentation tank. The top of the sedimentation tank is provided with a water inlet, and the side wall of the sedimentation tank is provided with a water outlet 1. The water outlet 1 is close to the top of the sedimentation tank. The sedimentation tank is provided with an aeration device 2 for breaking up air bubbles containing sludge by releasing high-pressure gas. The position of the aeration device 2 corresponds to the position of the water inlet. The side wall of the sedimentation tank is provided with a sludge discharge port 3, which is close to the bottom of the sedimentation tank.

[0036] In this embodiment, the sedimentation tank is equipped with a water inlet at the top to facilitate the injection of sludge into the sedimentation tank for sedimentation. During the sedimentation process, sludge particles in the water gradually settle to the bottom of the sedimentation tank and are discharged from the tank through the sludge discharge port 3 at the bottom. During this process, the number of suspended sludge particles in the water gradually decreases, and the upper layer of water gradually becomes clear, forming a supernatant. The sedimentation tank is equipped with a water outlet 1 on its side wall to facilitate the discharge of the supernatant. An aeration device 2 is installed inside the sedimentation tank, which can release high-pressure gas. This high-pressure gas can break up the air bubbles trapped in the sludge. As the air bubbles break, the sludge trapped in the air bubbles gradually sinks to the bottom of the sedimentation tank under the action of gravity. This process not only efficiently removes air bubbles trapped in the sludge but also promotes the separation of air bubbles from sludge, thereby significantly improving sedimentation efficiency.

[0037] The aeration device 2 is positioned corresponding to the water inlet. When sludge is injected into the sedimentation tank through the water inlet, the high-pressure gas released by the aeration device 2 travels through the sludge, effectively breaking up air bubbles trapped within it, causing the sludge encased in the bubbles to sink. This design eliminates air bubbles as they enter the sedimentation tank, improving both the efficiency of bubble removal and the overall sedimentation efficiency.

[0038] Secondly, the water inlet is connected to the water inlet pipe 4, which extends to the bottom of the sedimentation tank. The water inlet pipe 4 has an opening facing the bottom of the sedimentation tank. Below the opening, there is a baffle plate 5. The baffle plate 5 is umbrella-shaped. The upper surface of the baffle plate 5 faces the opening of the water inlet pipe 4, and the lower surface of the baffle plate 5 faces the aeration device 2.

[0039] In this embodiment, an umbrella-shaped baffle plate 5 is provided below the opening of the inlet pipe 4. When sludge is injected into the sedimentation tank through the inlet pipe 4, the baffle plate 5 can reduce the impact of the sludge on the aeration device 2, thereby preventing the aeration device 2 from being damaged by the impact. Secondly, the baffle plate 5 can make the injected sludge more evenly distributed in the sedimentation tank, avoiding the sludge from concentrating in a certain area, thereby ensuring the uniformity and efficiency of the sedimentation process. At the same time, the baffle plate 5 can reduce the amount of air bubbles generated when the sludge is injected, thereby avoiding excessive air bubbles that affect the sedimentation efficiency. In addition, the baffle plate 5 is umbrella-shaped in general. When the sludge is injected through the inlet pipe and falls on the baffle plate 5, the sludge can quickly slide off to the surroundings through the inclined surface of the baffle plate 5, which can prevent the sludge from accumulating on the baffle plate 5.

[0040] A first support column 6 extending downwards is provided at the middle of the baffle plate 5, and the bottom of the first support column 6 is fixedly connected to the aeration device 2. In this embodiment, the first support column 6 is provided at the middle of the baffle plate 5. The first support column 6 provides support for the baffle plate 5, enabling the baffle plate 5 to remain stable under the impact of sludge and preventing the baffle plate 5 from deforming or shifting due to the impact of sludge. The fixed connection between the bottom of the first support column 6 and the aeration device 2 enables the baffle plate 5 and the aeration device 2 to maintain a stable relative position, allowing the sludge sliding off the baffle plate 5 to accurately pass through the impact area of ​​the aeration device 2, thereby enabling the aeration device 2 to efficiently break the air bubbles in the sludge and improve the efficiency of removing air bubbles from the sludge.

[0041] See Figure 2 As shown, the aeration device 2 includes an aeration disc 7, which is hollow. A gas pipe 8 is provided inside the aeration disc 7. The gas pipe 8 is arranged in a ring and its position corresponds to the edge of the baffle plate 5. Several first air outlets 9 are evenly distributed on the gas pipe 8 and are arranged facing the opening of the water inlet pipe 4. Several second air outlets are opened on the aeration disc 7, and the positions of the second air outlets correspond one-to-one with the positions of the first air outlets 9.

[0042] In this embodiment, the gas pipe 8 is positioned corresponding to the edge of the baffle plate 5. Several first air outlets 9 are evenly distributed on the gas pipe 8, facing the opening of the water inlet pipe 4. The aeration disc 7 has second air outlets corresponding to the first air outlets 9. When the high-pressure gas in the gas pipe 8 is ejected through the first and second air outlets 9, this high-pressure gas can directly act on the sludge sliding down from the baffle plate 5, thereby quickly breaking up the air bubbles trapped in the sludge and improving treatment efficiency. As the air bubbles burst, the sludge encased within them gradually sinks to the bottom of the sedimentation tank under the influence of gravity. In this way, the air bubbles are eliminated when entering the sedimentation tank, improving not only the efficiency of bubble elimination but also the overall sedimentation efficiency.

[0043] Secondly, a second support column 10 extending downwards is provided at the center of the aeration disc 7, and the bottom of the second support column 10 is fixedly connected to the inner bottom of the sedimentation tank. In this embodiment, the second support column 10 provides necessary support for the aeration disc 7, preventing displacement and deformation of the aeration disc 7 due to the impact of sludge. At the same time, it can improve the stability of the aeration disc 7, enabling it to remain stable when releasing high-pressure gas.

[0044] See Figure 1 As shown, an air inlet 11 is provided on the gas pipeline 8, and a flexible hose 12 is connected to the air inlet 11. The flexible hose 12 extends through the aeration disc 7 towards the side wall of the sedimentation tank, and one end of the flexible hose 12 passing through the sedimentation tank is connected to an air compressor 13. In this embodiment, the air inlet 11 on the gas pipeline 8 facilitates the entry of gas into the gas pipeline 8. The flexible hose 12 is connected to the air inlet 11, and one end of the flexible hose 12 passing through the sedimentation tank is connected to the air compressor 13. When the air compressor 13 is started, high-pressure gas can be delivered to the gas pipeline 8 through the flexible hose 12.

[0045] Furthermore, the sludge discharge port 3 is connected to a sludge discharge pipe 14, and a suction pump 15 is installed on the sludge discharge pipe 14. In this embodiment, the sludge discharge port 3 is connected to a sludge discharge pipe 14, and a suction pump 15 is installed on the sludge discharge pipe 14. The suction pump 15 extracts the sludge from the bottom of the sedimentation tank through the sludge discharge pipe 14. This method can improve sludge discharge efficiency, reduce the residence time of sludge in the sedimentation tank, and prevent excessive accumulation of sludge. At the same time, through continuous suction, it is ensured that the sludge in the sludge discharge pipe 14 always remains in a flowing state, avoiding pipe blockage caused by sludge deposition.

[0046] In this embodiment, an aeration device 2 is installed inside the sedimentation tank. The aeration device 2 releases high-pressure gas, which breaks up air bubbles trapped in the sludge. As the bubbles burst, the sludge encased within them gradually sinks to the bottom of the sedimentation tank under gravity. This process not only efficiently removes air bubbles from the sludge but also promotes the separation of bubbles from the sludge, thus significantly improving sedimentation efficiency. Furthermore, the aeration device 2 is positioned corresponding to the water inlet. When sludge is injected into the sedimentation tank through the water inlet, the high-pressure gas released by the aeration device 2 travels through the sludge, effectively breaking up the air bubbles and causing the sludge encased within them to sink. This arrangement ensures that air bubbles are eliminated upon entering the sedimentation tank, improving both the efficiency of bubble removal and the overall sedimentation efficiency.

[0047] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for removing anaerobic sludge, characterized in that, The system includes a sedimentation tank, with a water inlet at the top and a water outlet on the side wall near the top. The sedimentation tank is equipped with an aeration device inside for breaking up air bubbles containing sludge by releasing high-pressure gas. The aeration device is positioned corresponding to the water inlet. The sedimentation tank is also equipped with a sludge discharge port on the side wall near the bottom.

2. The anaerobic sludge removal device according to claim 1, characterized in that: The water inlet is connected to a water inlet pipe that extends to the bottom of the sedimentation tank. The water inlet pipe has an opening facing the bottom of the sedimentation tank. A baffle plate is provided below the opening. The baffle plate is umbrella-shaped, with its upper surface facing the opening of the water inlet pipe and its lower surface facing the aeration device.

3. The anaerobic sludge removal device according to claim 2, characterized in that: The baffle plate has a first support column extending downward in the middle, and the bottom of the first support column is fixedly connected to the aeration device.

4. The anaerobic sludge removal device according to claim 1, characterized in that: The aeration device includes an aeration disc, which is hollow and has a gas pipe inside. The gas pipe is arranged in a ring and its position corresponds to the edge of the baffle plate. Several first air outlets are evenly distributed on the gas pipe and are oriented towards the opening of the water inlet pipe. Several second air outlets are opened on the aeration disc, and the positions of the second air outlets correspond one-to-one with the positions of the first air outlets.

5. The anaerobic sludge removal device according to claim 4, characterized in that: The aeration disc has a downward-extending second support column at its center, and the bottom of the second support column is fixedly connected to the inner bottom of the sedimentation tank.

6. The anaerobic sludge removal device according to claim 4, characterized in that: An air inlet is provided on the gas pipeline, and a flexible hose is connected to the air inlet. The flexible hose extends through the aeration disc and toward the side wall of the sedimentation tank. One end of the flexible hose passing through the sedimentation tank is connected to an air compressor.

7. The anaerobic sludge removal device according to claim 1, characterized in that: The sludge discharge port is connected to a sludge discharge pipe, and a suction pump is installed on the sludge discharge pipe.

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