Active biological sludge filtration reaction device

Abstract

The utility model relates to an active biological sludge filtration reaction device, and relates to the technical field of domestic sewage treatment, the active biological sludge filtration reaction device comprises a treatment bin, a partition plate is fixedly connected in the treatment bin, the upper part of the treatment bin is provided with a water inlet interception grating, the treatment bin is divided into an anoxic biochemical bin and an aerobic biochemical bin by the partition plate, and the anoxic biochemical bin and the aerobic biochemical bin are arranged in the treatment bin. A stirring piece and a conveying assembly used for conveying sewage to one side of the aerobic biochemical bin are arranged in the anoxic biochemical bin, the stirring piece is arranged at the bottom of the anoxic biochemical bin, a conical bin is arranged in the aerobic biochemical bin, and a filler layer, a filter layer and a sludge lifting pump are sequentially arranged in the conical bin from top to bottom; the side wall of the upper part of the conical bin is communicated with a water outlet pipe, the sludge lifting pump is communicated with a collection assembly, the bottom of the aerobic biochemical bin is provided with an aeration assembly, and the bottom of the conical bin is provided with a transmission assembly. The sewage treatment system has the advantages that the management cost and the economic cost of the sewage treatment system are lower.

Description

Technical Field

[0001] This application relates to the technical field of domestic sewage treatment, and in particular to an activated biological sludge filtration reactor. Background Technology

[0002] Existing rural sewage treatment facilities generally adopt traditional activated sludge or biofilm treatment processes such as AO / AAO / multi-stage AO. After pretreatment, most organic pollutants in the sewage are degraded through microbial oxidation, adsorption and other processes.

[0003] When the above-mentioned processes and systems face the problem of high-concentration sludge influent, they mostly adopt the addition of filler to increase the treatment capacity, which makes management more complicated and the cost higher. Utility Model Content

[0004] In order to reduce the management and economic costs of wastewater treatment systems, this application provides an activated biological sludge filtration reactor.

[0005] The activated biological sludge filtration reactor provided in this application adopts the following technical solution:

[0006] An activated biological sludge filtration reactor includes a treatment chamber with a partition fixed inside. An inlet interception grid is installed on the upper part of the treatment chamber, dividing it into an anoxic biological chamber and an aerobic biological chamber. The anoxic biological chamber contains a stirring element and a conveying assembly for transporting wastewater to one side of the aerobic biological chamber. The stirring element is located at the bottom of the anoxic biological chamber. The aerobic biological chamber contains a conical chamber that gradually narrows towards the bottom of the treatment chamber. From top to bottom, the conical chamber contains a packing layer, a filter layer, and a sludge lift pump. An outlet pipe is connected to the upper side wall of the conical chamber, with one end of the outlet pipe outside the treatment chamber. A collection assembly is connected to the sludge lift pump. An aeration assembly is located at the bottom of the aerobic biological chamber, and a conveying assembly for transporting wastewater from the aerobic biological chamber to the conical chamber is located at the bottom of the conical chamber.

[0007] By adopting the above technical solution, the pre-filtered wastewater can be transported to the anoxic biological treatment chamber, and the agitator is activated simultaneously to stir the bottom of the chamber, ensuring thorough mixing of sludge and water. Then, the wastewater is transferred to the aerobic biological treatment chamber via a conveying assembly, and the aeration assembly is activated simultaneously to supply oxygen. Subsequently, wastewater is transported from the aerobic biological treatment chamber to the conical chamber via a transmission assembly. The wastewater then passes through the filtration layer and the separation effect of the packing layer, causing the clear water to concentrate in the upper part of the conical chamber. The clear liquid in the upper part of the conical chamber is then discharged through the effluent pipe. This special conical flow guide zone design forms a sludge layer adsorption filtration system, which not only replaces secondary sedimentation tanks and filter tanks but also has a longer sludge age, smaller footprint, and lower residual sludge production, making it more efficient and energy-saving, and reducing the management and economic costs of the wastewater treatment system.

[0008] Optionally, the aeration assembly includes multiple aeration pipes disposed at the bottom of the aerobic biochemical chamber, and multiple air supply pipes are provided outside the treatment chamber, with each air supply pipe corresponding to and connected to the aeration pipe.

[0009] By adopting the above technical solution, gas can be supplied to the gas supply pipe by using external gas supply devices such as blowers, so that the gas enters the aeration pipe through the gas supply pipe and is then supplied to the aerobic biochemical chamber.

[0010] Optionally, the agitator is configured as a submersible agitator installed at the bottom of the anoxic biochemical chamber.

[0011] By adopting the above technical solution, the sewage at the bottom of the anoxic biochemical chamber can be stirred by a submersible mixer, reducing the occurrence of sludge settling.

[0012] Optionally, the delivery assembly includes a first submersible pump installed inside the anoxic biochemical chamber, with a delivery pipe fixedly connected to and connected to the first submersible pump, and the end of the delivery pipe away from the first submersible pump placed inside the aerobic biochemical chamber.

[0013] By adopting the above technical solution, sewage can be pumped into the aerobic biochemical chamber through the first submersible pump along the delivery pipe.

[0014] Optionally, the packing layer includes a plurality of inclined tubes fixed to the inner wall of the conical chamber.

[0015] By adopting the above technical solution, solid-liquid separation can be achieved by using an inclined tube and taking advantage of the difference in settling velocity of the liquid under gravity.

[0016] Optionally, the collection assembly includes a sludge tank connected to the sludge lifting pump, a sludge discharge pipe fixedly connected to and connected to one side of the sludge tank, and a return pipe fixedly connected to the upper part of the sludge tank, the return pipe being connected to the anoxic biochemical chamber.

[0017] By adopting the above technical solution, the sludge discharged through the sludge discharge pipe is concentrated in the sludge tank. Then, the sludge with a higher concentration in the sludge tank can be discharged into the next process through the sludge discharge pipe, while the sludge and wastewater with a lower concentration can be returned to the anoxic biochemical chamber through the return pipe.

[0018] Optionally, the transmission assembly includes a transmission pipe that passes through the bottom sidewall of the conical chamber and is placed inside the aerobic biochemical chamber, and a second submersible pump is installed on the transmission pipe.

[0019] By adopting the above technical solution, the sewage in the anoxic biochemical chamber can be transported to the conical chamber through the transmission pipe by the second submersible pump.

[0020] Optionally, a push plate is slidably connected inside the sludge tank, and a hydraulic cylinder is provided on one side of the sludge tank, the hydraulic cylinder passing through the sludge tank and being fixedly connected to the push plate.

[0021] By adopting the above technical solution, the hydraulic cylinder can be controlled to move the push plate towards one side of the sludge discharge pipe, and the sludge can be pushed towards the other side of the sludge discharge pipe.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The special cone-shaped flow guide zone design can form a sludge layer for adsorption and filtration, which not only replaces the secondary sedimentation tank and filter tank, but also has a long sludge age, small footprint, and low residual sludge production, making it more efficient and energy-saving, and making the management cost and economic cost of the sewage repulsion system lower.

[0024] 2. Solid-liquid separation can be achieved by using an inclined tube to utilize the difference in settling velocity of liquids under gravity;

[0025] 3. Gas can be supplied through the gas supply pipe by using external gas supply devices such as blowers, so that the gas enters the aeration pipe through the gas supply pipe and is then supplied to the aerobic biochemical chamber. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the structure of the hydraulic cylinder according to an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the gas supply pipe according to an embodiment of this application.

[0029] In the diagram, 1. Treatment chamber; 11. Inlet interception bar; 12. Anoxic biological chamber; 121. Mixing component; 13. Aerobic biological chamber; 14. Baffle; 2. Conveying assembly; 21. Conveying pipe; 22. First submersible pump; 3. Conical chamber; 31. Packing layer; 311. Inclined tube; 32. Filter layer; 33. Sludge lift pump; 4. Outlet pipe; 5. Collection assembly; 51. Sludge tank; 52. Sludge discharge pipe; 53. Return pipe; 6. Aeration assembly; 61. Aeration pipe; 62. Air supply pipe; 7. Transmission assembly; 71. Transmission pipe; 72. Second submersible pump; 73. Push plate; 74. Hydraulic cylinder. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail below.

[0031] An embodiment of this application is: an activated biological sludge filtration reactor, referring to... Figure 1 The system includes a treatment chamber 1, which is rectangular in shape. A partition 14 is fixedly connected inside the treatment chamber 1. The partition 14 is vertically arranged and divides the treatment chamber 1 into anoxic biological chamber 12 and aerobic biological chamber 13. An inlet interception grid 11 is installed on the upper side wall of the treatment chamber 1.

[0032] The anoxic biochemical chamber 12 is equipped with a stirring element 121. In this embodiment, the stirring element 121 is a submersible agitator, which is installed at the bottom of the anoxic biochemical chamber 12. When the submersible agitator is activated, it can stir the bottom of the anoxic biochemical chamber 12, reducing the settling of sludge at the bottom of the anoxic biochemical chamber 12.

[0033] The anoxic biochemical chamber 12 is equipped with a conveying assembly 2 for conveying wastewater to the aerobic biochemical chamber 13. The conveying assembly 2 includes a first submersible pump 22 installed in the anoxic biochemical chamber 12, and a conveying pipe 21 is fixedly connected to and communicated with the first submersible pump 22. The end of the conveying pipe 21 away from the first submersible pump 22 extends towards the upper part of the aerobic biochemical chamber 13 and is placed inside the aerobic biochemical chamber 13.

[0034] This activates the first submersible pump 22, which can then transport wastewater through the delivery pipe 21 into the aerobic biochemical chamber 13.

[0035] Reference Figure 1 and Figure 2The aerobic biochemical chamber 13 contains a conical chamber 3, which gradually narrows towards the bottom of the treatment chamber 1. Inside the conical chamber 3, from top to bottom, are arranged a packing layer 31, a filter layer 32, and a sludge lift pump 33. The packing layer 31 includes multiple inclined tubes 311. The inclined tubes 311 are fixedly connected to the inner wall of the conical chamber 3, allowing solid-liquid separation through the difference in settling velocity of the liquid under gravity. The filter layer 32 is a high-density filter screen fixedly connected inside the conical chamber 3. The sludge lift pump 33 is positioned between the bottom wall of the conical chamber 3 and the filter layer 32.

[0036] The bottom of the conical chamber 3 is equipped with a transfer assembly 7 for conveying wastewater from the aerobic biological chamber 13 into the conical chamber 3. The transfer assembly 7 includes a transfer pipe 71, which is positioned below the sludge lift pump 33. The transfer pipe 71 passes through the bottom side wall of the conical chamber 3 and is placed inside the aerobic biological chamber 13. A second submersible pump 72 is installed on the transfer pipe 71.

[0037] A water outlet pipe 4 is connected to the upper side wall of the conical chamber 3, with the end of the water outlet pipe 4 away from the conical chamber 3 located outside the treatment chamber 1. This activates the second submersible pump 72, which transports wastewater from the anoxic biological treatment chamber 12 to the conical chamber 3 via the transmission pipe 71. The wastewater is then filtered by the filter layer 32, and the separation effect of the packing layer 31 concentrates the clean water in the upper part of the conical chamber 3. The clean liquid in the upper part of the conical chamber 3 is then discharged through the water outlet pipe 4.

[0038] A collection assembly 5 is connected to the sludge lift pump 33. The collection assembly includes a sludge tank 51, which is located on one side of the treatment chamber 1. The sludge tank 51 is connected to the sludge lift pump 33. A sludge discharge pipe 52 is fixedly connected to and connected to one side of the sludge tank 51. The side of the sludge discharge pipe 52 away from the sludge tank 51 extends downward and connects to the sludge treatment equipment in the plant area. A return pipe 53 is fixedly connected to the upper side wall of the sludge tank 51. The side of the return pipe 53 away from the sludge tank 51 connects to the anoxic biological treatment chamber 12. To facilitate the cleaning of sludge in the sludge tank 51, a push plate 73 is slidably connected inside the sludge tank 51. A hydraulic cylinder 74 is provided on one side of the sludge tank 51. The hydraulic cylinder 74 passes through the side wall of the sludge tank 51 and is fixedly connected to the push plate 73.

[0039] Therefore, when too much sludge accumulates in the sludge tank 51, the hydraulic cylinder 74 can be controlled to move the push plate 73 toward the sludge discharge pipe 52 and push the sludge toward the sludge discharge pipe 52.

[0040] The sludge discharged by the sludge lift pump 33 can be concentrated in the sludge tank 51. Then, the sludge with a higher concentration in the sludge tank 51 can be discharged into the next process through the sludge discharge pipe 52. The sludge and sewage with a lower concentration can be returned to the anoxic biochemical chamber 12 through the return pipe 53 under the pressure of the external pump.

[0041] Reference Figure 1 , Figure 2 and Figure 3 The bottom of the aerobic biochemical chamber 13 is provided with an aeration component 6. The aeration component 6 includes multiple aeration pipes 61 set at the bottom of the aerobic biochemical chamber 13. Multiple air supply pipes 62 are provided outside the treatment chamber 1. The air supply pipes 62 correspond one-to-one with the aeration pipes 61 and are connected.

[0042] Therefore, gas can be supplied to the gas supply pipe 62 by using an external gas supply device, so that the gas enters the aeration pipe 61 through the gas supply pipe 62, and then supplies gas to the aerobic biochemical chamber 13 through the aeration pipe 61 to create an aerobic environment.

[0043] The implementation principle of this application embodiment is as follows: the pre-sedimented sewage can be transported to the anoxic biochemical chamber 12, and the submersible agitator is started at the same time to stir the bottom of the anoxic biochemical chamber 12.

[0044] Subsequently, by starting the first submersible pump 22, the sewage is input into the aerobic biological chamber 13, and at the same time, gas is delivered into the aeration pipe 61, thereby delivering oxygen into the aerobic biological chamber 13.

[0045] Then, the second submersible pump 72 is started to transport sewage from the aerobic biochemical chamber 13 to the conical chamber 3. The sewage can then be filtered by the filter layer 32 and separated by the packing layer 31, so that the clean water is concentrated in the upper part of the conical chamber 3. The clean liquid in the upper part of the conical chamber 3 can then be discharged through the outlet pipe 4.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An activated sludge filtration reactor, comprising a treatment tank (1), characterized in that, A partition (14) is fixedly connected inside the treatment chamber (1). An inlet interception grille (11) is installed on the upper part of the treatment chamber (1). The partition (14) divides the treatment chamber (1) into an anoxic biological chamber (12) and an aerobic biological chamber (13). The anoxic biological chamber (12) is equipped with a stirring element (121) and a conveying assembly (2) for conveying sewage to one side of the aerobic biological chamber (13). The stirring element (121) is placed at the bottom of the anoxic biological chamber (12). The aerobic biological chamber (13) is equipped with a conical chamber (3). The conical chamber (3) is close to the treatment chamber (1). The bottom side gradually narrows. The conical chamber (3) is provided with a packing layer (31), a filter layer (32) and a sludge lifting pump (33) from top to bottom. The upper side wall of the conical chamber (3) is connected to an outlet pipe (4). The end of the outlet pipe (4) away from the conical chamber (3) is placed outside the treatment chamber (1). The sludge lifting pump (33) is connected to a collection component (5). The bottom of the aerobic biochemical chamber (13) is provided with an aeration component (6). The bottom of the conical chamber (3) is provided with a transmission component (7) for conveying the sewage in the aerobic biochemical chamber (13) to the conical chamber (3).

2. The activated sludge filtration reactor according to claim 1, wherein The aeration assembly (6) includes multiple aeration pipes (61) disposed at the bottom of the aerobic biochemical chamber (13), and multiple air supply pipes (62) are provided outside the treatment chamber (1). The air supply pipes (62) correspond one-to-one with the aeration pipes (61) and are connected.

3. The activated sludge filtration reactor according to claim 1, wherein The agitator (121) is configured as a submersible agitator installed at the bottom of the anoxic biochemical chamber (12).

4. The activated sludge filtration reactor according to claim 1, wherein The delivery assembly (2) includes a first submersible pump (22) installed in the hypoxic biochemical chamber (12), and a delivery pipe (21) is fixedly connected to and connected to the first submersible pump (22). One end of the delivery pipe (21) away from the first submersible pump (22) is placed in the aerobic biochemical chamber (13).

5. The activated sludge filtration reactor according to claim 1, wherein The packing layer (31) includes a plurality of inclined tubes (311), which are fixed to the inner wall of the conical chamber (3).

6. The activated sludge filtration reactor according to claim 1, wherein The collection component (5) includes a sludge tank (51), which is connected to the sludge lifting pump (33). A sludge discharge pipe (52) is fixedly connected to one side of the sludge tank (51), and a return pipe (53) is fixedly connected to the upper part of the sludge tank (51). The return pipe (53) is connected to the anoxic biochemical chamber (12).

7. The activated sludge filtration reactor according to claim 1, wherein The transmission assembly (7) includes a transmission pipe (71) that passes through the bottom sidewall of the conical chamber (3) and is placed inside the aerobic biochemical chamber (13). A second submersible pump (72) is installed on the transmission pipe (71).

8. The activated sludge filtration reactor according to claim 6, wherein A push plate (73) is slidably connected inside the sludge tank (51). A hydraulic cylinder (74) is provided on one side of the sludge tank (51). The hydraulic cylinder (74) passes through the sludge tank (51) and is fixedly connected to the push plate (73).

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