Efficient mud pumping device for sedimentation tank

Abstract

The utility model relates to the technical field of sewage treatment, in particular to an efficient mud pumping device for a sedimentation tank, which comprises a pump body and a mud pumping pipeline communicated with the pump body, the bottom end of the mud pumping pipeline is communicated with a distributed pipeline arranged at the bottom of a mud bucket, and the distributed pipeline is provided with holes. The device has the beneficial effects that according to the size of the mud bucket, the closed pipeline can cover the whole area of the mud bucket to pump mud thoroughly, and the mud pumping area is large, so that water is not easy to pump back to the anoxic tank and the aerobic tank.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially, relate to a kind of high-efficiency mud pumping device of sedimentation tank. BACKGROUND

[0002] In the sewage treatment process, the activated sludge in the sedimentation tank mud bucket contains a high proportion of moisture, which is difficult to effectively pump back to the front end of the anoxic tank or the aerobic tank to supplement the microbial population, and in most cases, only water can be pumped back, which directly leads to a significant reduction in the sludge concentration of the front end of the aerobic tank.

[0003] Currently, common solutions include using a submersible sewage pump directly placed in the sedimentation tank bottom mud bucket to pump mud, or using a self-priming pump with a pipeline deep into the bottom of the mud bucket to pump. However, given the wide area of the sedimentation tank mud bucket and the relatively small water inlet area of the submersible sewage pump and self-priming pump pipeline, the submersible sewage pump and self-priming pump can only achieve partial sludge pumping. This partial pumping method has a problem: after the area where the pumped sludge is reduced, the sludge in other areas cannot be treated, which can easily lead to the mistaken pumping of clean water from the sedimentation tank during operation. SUMMARY

[0004] To solve the problem of only partial pumping and the risk of mistakenly pumping clean water from the sedimentation tank when using a pump in the mud bucket to pump mud in the prior art, the present utility model provides a high-efficiency mud pumping device for a sedimentation tank, which has a large pumping area and good pumping effect.

[0005] To achieve the above-mentioned purpose, the following technical solutions are provided:

[0006] A high-efficiency mud pumping device for a sedimentation tank includes a pump body and a mud pumping pipeline connected to the pump body. The bottom end of the mud pumping pipeline is connected to a distribution pipeline arranged at the bottom of the mud bucket. The distribution pipeline is provided with openings.

[0007] Further, the distribution pipeline is a spiral pipeline with one end closed and the other end connected to the mud pumping pipeline.

[0008] Further, the distribution pipeline is a closed pipeline 3.

[0009] Further, the closed pipeline is circular or polygonal.

[0010] Further, the closed pipeline is provided with branch pipes, which are also provided with openings, and the two ends of the branch pipes are connected to the closed pipeline.

[0011] Further, an inclined section matching the bevel shape of the mud bucket is arranged between the mud pumping pipeline and the closed pipeline.

[0012] Further, the openings are located in the lower part and left and right sides of the closed pipeline, or in the upper part, lower part, and left and right sides of the closed pipeline.

[0013] The present utility model discloses the beneficial effect is: according to the size of mud bucket, the closed pipeline can cover the mud bucket whole area and extract mud thoroughly, and the mud extraction area is large, and water is not easy to be extracted back to the anoxic tank and the aerobic tank. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the use scene structural drawing of the sedimentation tank high -efficient mud extraction device;

[0015] Figure 2 It is the structural drawing of the closed pipeline;

[0016] In the drawing: 1, pump body;2, mud extraction pipeline;3, closed pipeline;4, opening;5, branch pipe;6, inclined section;7, anoxic tank;8, aerobic tank;9, sedimentation tank;10, water outlet groove;11, center flow guide cylinder;12, mud bucket. DETAILED DESCRIPTION

[0017] The present utility model discloses the beneficial effect is: according to the size of mud bucket, the closed pipeline can cover the mud bucket whole area and extract mud thoroughly, and the mud extraction area is large, and water is not easy to be extracted back to the anoxic tank and the aerobic tank.

[0018] A kind of sedimentation tank high -efficient mud extraction device, including pump body 1 and mud extraction pipeline 2 with pump body 1 communication, the bottom end of mud extraction pipeline 2 is connected with the distribution type pipeline being arranged at the bottom of mud bucket 12, and opening 4 is arranged on distribution type pipeline.

[0019] Distribution type pipeline is the parallel arrangement of multiple pipelines, can be laid in mud bucket bottom, to expand mud extraction area, in an embodiment, distribution type pipeline is the spiral pipeline with one end closed, one end with mud extraction pipeline communication, and opening 4 is located on spiral pipeline.In this embodiment, distribution type pipeline is closed pipeline 3, and opening 4 is located on closed pipeline 3.

[0020] As Figure 1 As shown, sewage in anoxic tank 7 flows into aerobic tank 8, and sewage in aerobic tank 8 enters sedimentation tank 9 through center flow guide cylinder 11 for mud-water separation, and activated sludge sinks into mud bucket 12, and supernatant flows out through water outlet groove 10.Pump body 1 extracts activated sludge in mud bucket 12 back to anoxic tank 7 and aerobic tank 8 through connecting mud extraction pipeline 2 and closed pipeline 3 to supplement bacterial species.Closed pipeline 3 is designed with multiple holes and can cover the bottom area of mud bucket 12, has the characteristics of large mud extraction area and good mud extraction effect, improves the efficiency of wastewater treatment, and since mud extraction is thorough, water is not easy to be extracted back to anoxic tank 7 and aerobic tank 8.

[0021] The anoxic tank 7 is used for denitrification reaction under anoxic condition, in which facultative bacteria group uses organic matter as carbon source and energy, and uses nitrate nitrogen in the reflux water as oxygen source for denitrification reaction, and at the same time, degrades and removes pollutants such as COD. The aerobic tank 8 is used for metabolism of organic matter after being taken by microorganisms under aerobic condition. At the same time, the aerobic tank 8 is also the main place for nitrification reaction, which converts ammonia nitrogen into nitrate nitrogen. The activated sludge is refluxed to the anoxic tank 7 to supplement the sludge concentration in the anoxic tank 7, so as to provide sufficient amount of microorganisms for denitrification reaction. The sludge is refluxed to the aerobic tank 8 to directly supplement the sludge concentration in the aerobic tank 8, so as to maintain the nitrification reaction capacity of the system.

[0022] Preferably, the closed pipe 3 is circular or polygonal. The closed pipe 3 is designed to allow the sludge entering the opening 4 at each position of the pipe to smoothly enter the sludge suction pipe 2. As shown in the figure, the closed pipe 3 is square-shaped and matches the shape of the bottom of the hopper 12. Figure 2

[0023] Preferably, the closed pipe 3 is provided with a branch pipe 5, which is also provided with an opening 4, and the two ends of the branch pipe 5 are in communication with the closed pipe 3. The branch pipe 5 helps to increase the area of the closed pipe 3 covering the hopper 12.

[0024] Preferably, an inclined section 6 matching the shape of the inclined side of the hopper 12 is arranged between the sludge suction pipe 2 and the closed pipe 3. The central flow guide cylinder 11 is located in the center of the sedimentation tank 9, which is designed to optimize the separation process of sewage and sludge. When sewage flows into the sedimentation tank 9, solid particles sink to the bottom of the tank to form a sludge layer under the action of gravity, and clear water flows out of the tank body smoothly under the guidance of the central flow guide cylinder 11. The sludge suction pipe 2 needs to avoid the central flow guide cylinder 11, and the inclined section 6 matches the shape of the hopper 12, which is conducive to avoiding the central flow guide cylinder 11 and facilitating installation on the side of the hopper 12.

[0025] Preferably, the opening 4 is located at the lower part and both sides of the closed pipe 3, which is conducive to the sludge at the bottom of the hopper 12 entering the inside of the opening 4. If the opening 4 is only arranged at the upper part but not at the lower part, the sludge below the thickness of the closed pipe 3 cannot be easily sucked out. In another embodiment, the opening 4 is arranged at the upper part, lower part and both sides of the closed pipe 3, so that the sludge around and below the closed pipe 3 can be sucked into the sludge suction pipe 2 through the opening 4.​

Claims

1. A high-efficiency sludge pumping device for a sedimentation basin, characterized by, The utility model relates to a pump body (1) and mud suction pipeline (2) which communicates with the pump body (1), the bottom end of mud suction pipeline (2) communicates with the distributed pipeline which is arranged at the bottom of the hopper (12), and the distributed pipeline is provided with an opening (4).

2. The high efficiency sludge pumping device for sedimentation tanks according to claim 1, characterized in that, The distributed pipeline is a spiral pipeline with one end closed and the other end communicating with the mud suction pipeline.

3. The high efficiency sludge pumping device for sedimentation basins of claim 1, wherein, The distributed pipeline is a closed pipeline (3).

4. The high efficiency sludge pumping device for sedimentation basins of claim 3, wherein, An inclined section (6) which matches the shape of the bevel of the hopper (12) is arranged between the mud suction pipeline (2) and the closed pipeline (3).

5. The high efficiency sludge pumping device for sedimentation tanks according to claim 3 or 4, characterized in that, The closed pipeline (3) is circular or polygonal.

6. The high efficiency sludge pumping device for sedimentation tanks according to claim 3 or 4, characterized in that, A branch pipe (5) is arranged on the closed pipeline (3), and the branch pipe (5) is also provided with an opening (4), and both ends of the branch pipe (5) communicate with the closed pipeline (3).

7. The high efficiency sludge pumping device for sedimentation basins of claim 5, wherein, A branch pipe (5) is arranged on the closed pipeline (3), and the branch pipe (5) is also provided with an opening (4), and both ends of the branch pipe (5) communicate with the closed pipeline (3).

8. A high efficiency sludge pumping device for a sedimentation basin as claimed in claim 3, 4 or 7, characterised in that, The opening (4) is located at the lower part and both sides of the closed pipeline (3), or at the upper part, lower part and both sides of the closed pipeline (3).

9. The high efficiency sludge pumping apparatus for settling lagoons as claimed in claim 5 wherein, The opening (4) is located at the lower part and both sides of the closed pipeline (3), or at the upper part, lower part and both sides of the closed pipeline (3).

10. The high efficiency sludge pumping apparatus for settling lagoons as claimed in claim 6 wherein, The opening (4) is located at the lower part and both sides of the closed pipeline (3), or at the upper part, lower part and both sides of the closed pipeline (3). The opening (4) is located at the lower part and both sides of the closed pipeline (3), or at the upper part, lower part and both sides of the closed pipeline (3).

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