An upflow anaerobic sludge bed with slag cleaning function
By combining high-pressure nozzles to spray water jets with scum collection pipes, the problem of scum blockage is solved, and automated cleaning of the upflow anaerobic sludge bed is achieved, ensuring stable operation and safety of the equipment.
Patent Information
- Application Number
- CN202521406675.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-07-04
AI Technical Summary
In existing upflow anaerobic sludge blanket systems, scum easily adheres to the surface of the three-phase separator baffles, affecting the separation efficiency and potentially causing blockages. Furthermore, manual cleaning poses safety risks.
High-pressure nozzles are used to spray water jets to remove scum, and automated cleaning is achieved through scum collection pipes and sewage pipes. Combined with infrared beam switches to detect scum areas, targeted cleaning of scum accumulation is carried out.
It achieves automated cleaning of scum, ensures stable equipment operation, improves safety, and avoids manual intervention.
Smart Images
Figure CN224930388U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water treatment equipment, specifically to an upflow anaerobic sludge bed with sludge removal function. Background Technology
[0002] Upflow anaerobic sludge blanket (UASB) tanks are a common and highly efficient anaerobic bioreactor.
[0003] The three-phase separator, as a supporting device (or component) of the UASB tank, is an important part of the UASB tank and is used to separate systems containing granular sludge (solid phase), wastewater (liquid phase), and biogas (gas phase). When the mixed liquid in the UASB tank rises and impacts the baffle of the three-phase separator, the granular sludge is affected by gravity and settles back to the bottom of the UASB tank, while the biogas is affected by buoyancy and rises to the gas collection system, thus achieving three-phase separation.
[0004] like Figure 1 As shown, during wastewater treatment, floating debris such as scum and aged sludge are easily generated. Over time, these deposits adhere to the surface of the three-phase separator baffles, affecting the cutting ability after impacting the mixed liquid, leading to a decline in three-phase separation function. The solid, liquid, and gas phases become difficult to separate, impacting the design function of the UASB tank. Furthermore, long-term accumulation of scum on the baffle surface can block the mixed liquid channels between the baffles, making it difficult for biogas to rise. Therefore, scum removal is essential. Since the UASB tank is an anaerobic environment, it easily produces gases such as hydrogen sulfide and ammonia, making manual cleaning prone to safety accidents. Therefore, scum removal has become a major technical challenge in the UASB tank process. Utility Model Content
[0005] The purpose of this invention is to address the problems existing in the prior art by providing an upflow anaerobic sludge bed with a sludge removal function, which can automatically remove floating sludge.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An upflow anaerobic sludge bed with sludge removal function includes a tank body, an inlet water distribution system located at the bottom of the tank body, a three-phase separator located at the top of the tank body, an outlet water system, and an aeration system. It also includes a scum collection pipe, a sewage discharge pipe, and a high-pressure nozzle installed inside the tank body. The three-phase separator is composed of multiple sets of V-shaped baffles. The scum collection pipe is fixedly located below the three-phase separator with its opening facing upwards, directly between two sets of V-shaped baffles. The sewage discharge pipe is connected to the outlet of the scum collection pipe for discharging scum. The high-pressure nozzle is fixedly installed at the top of the tank body, above the three-phase separator.
[0008] Furthermore, the high-pressure nozzle is equipped with a rotating nozzle.
[0009] Furthermore, the scum collection pipe is provided with a water inlet at the end away from the sewage pipe.
[0010] Furthermore, each set of partitions in the three-phase separator is equipped with an infrared beam switch at both ends for detecting scum.
[0011] This invention relates to an upflow anaerobic sludge bed with a sludge removal function. High-pressure water jets from high-pressure nozzles remove scum from the three-phase separator, which is then collected and discharged through a scum collection pipe. It also features a detection function, allowing for targeted cleaning of areas with severe scum accumulation. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of scum adhering to a three-phase separator in the existing technology.
[0013] Figure 2 This is a schematic diagram of the structure of an upflow anaerobic sludge bed with sludge removal function provided by this utility model.
[0014] Figure 3 This is a schematic diagram of the connection structure between the scum collection pipe and the sewage discharge pipe. Detailed Implementation
[0015] The technical solution of this utility model will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0016] Example 1
[0017] like Figure 2 As shown, the present invention provides an upflow anaerobic sludge bed with sludge removal function, including a tank body 1, an inlet water distribution system 2 located at the bottom of the tank body 1, a three-phase separator 3 located at the top of the tank body 1, an outlet water system 4, and an air collection system 5. It also includes a scum collection pipe 6, a sewage discharge pipe 61, and a high-pressure nozzle 7 installed inside the tank body 1. The three-phase separator 3 is composed of multiple sets of V-shaped partitions 31. The scum collection pipe 6 is fixedly installed with its opening facing upward below the three-phase separator 3, directly opposite the two sets of V-shaped partitions 31. The sewage discharge pipe 61 is connected to the outlet of the scum collection pipe 6 for discharging scum. The high-pressure nozzle 7 is fixedly installed at the top of the tank body 1, above the three-phase separator 3.
[0018] When scum removal is required, the wastewater level in tank 1 can be lowered below the scum collection pipe 6, fully exposing the three-phase separator 3 and the scum collection pipe 6. Then, the high-pressure nozzle 7 is activated to flush the surface of the three-phase separator 3, specifically the surfaces of each set of baffles 31, forcing the scum adhering to the baffles 31 to detach. The detached scum falls into the scum collection pipe 6 and then flows to the sewage discharge pipe 61 to be discharged outside tank 1.
[0019] Preferably, the high-pressure nozzle 7 is equipped with a rotating nozzle (not shown). The rotating nozzle can be hydraulically driven or electrically driven. The rotating nozzle can cover and scour the surface of each set of partitions 31 of the three-phase separator 3 without any blind spots.
[0020] Preferably, the end of the scum collection pipe 6 away from the sewage pipe 61 is provided with a water inlet (not shown), which can be filled with clean water as a driving water flow. Under the action of the driving water flow, the broken scum can flow more smoothly along the scum collection pipe 6 to the sewage pipe 61, so as to prevent it from accumulating in the scum collection pipe 6.
[0021] Furthermore, in order to enable the scum cleaning to have a certain intelligent recognition capability, each set of partitions 31 of the three-phase separator 3 is equipped with infrared photoelectric switches (not shown) for detecting scum at both ends.
[0022] When scum adheres to the surface of the baffle 31, the infrared photoelectric switch will emit an identification signal to identify the area where the scum is located. If, during the cleaning operation, the scum is not washed off due to its strong adhesion, the high-pressure nozzle 7 in the corresponding area can be controlled to work continuously and independently, or the water pressure of the corresponding high-pressure nozzle 7 can be increased for a short period of time to enhance the flushing effect until the infrared photoelectric switch can no longer identify the scum.
[0023] This utility model provides an upflow anaerobic sludge bed with a sludge removal function, which can use a high-pressure nozzle 7 to spray water jets to flush and remove floating sludge, achieving automated sludge removal and ensuring stable operation of the equipment for a long time and with high efficiency. Furthermore, the entire process is automated, requiring no manual intervention, effectively improving the safety of management personnel.
[0024] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An upflow anaerobic sludge blanket with sludge removal function, comprising a tank body, an influent distribution system located at the bottom of the tank body, a three-phase separator located at the top of the tank body, an effluent system, and an aeration system, characterized in that: It also includes a scum collection pipe, a sewage discharge pipe, and a high-pressure nozzle installed inside the pool; the three-phase separator is composed of multiple sets of figure-eight shaped baffles, and the scum collection pipe is fixedly installed with its opening facing upwards below the three-phase separator, directly opposite the two sets of figure-eight shaped baffles; the sewage discharge pipe is connected to the outlet of the scum collection pipe and is used to discharge the scum. The high-pressure nozzle is fixedly installed on the top of the pool body, above the three-phase separator.
2. The upflow anaerobic sludge blanket with sludge removal function according to claim 1, characterized in that: The high-pressure nozzle is equipped with a rotating nozzle.
3. The upflow anaerobic sludge blanket with sludge removal function according to claim 1, characterized in that: The scum collection pipe has an inlet at the end furthest from the sewage pipe.
4. The upflow anaerobic sludge blanket with sludge removal function according to claim 1, characterized in that: Each set of partitions in the three-phase separator is equipped with an infrared photoelectric switch at both ends for detecting scum.