Anaerobic tower for internal circulation of sludge

Abstract

The utility model discloses an anaerobic tower for internal circulation of sludge, which comprises an anaerobic tower body and a first pump body, the anaerobic tower body is provided with a sewage inlet, a sewage outlet, a circulation inlet and a circulation outlet, the circulation inlet is arranged at the lower end of the anaerobic tower body, the first pump body is arranged outside the anaerobic tower body, and the circulation outlet is arranged at the lower end of the first pump body. A liquid inlet of the first pump body is communicated with the circulating outlet, a liquid outlet of the first pump body is communicated with the circulating inlet, the sewage inlet is used for introducing sewage into the anaerobic tower body, and the sewage outlet is used for discharging the sewage subjected to anaerobic treatment in the anaerobic tower body; in this way, sewage in the anaerobic tower body can be pumped from the upper portion of the anaerobic tower body to the lower portion of the anaerobic tower body through the first pump body, so that up-down circulation of the sewage in the anaerobic tower body is achieved, and meanwhile the sewage can impact the inner bottom of the anaerobic tower body to prevent anaerobic sludge from being deposited at the inner bottom of the anaerobic tower body.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to an anaerobic tower with internal circulation of sludge. Background Art

[0002] Anaerobic treatment is one of the important links in sewage treatment. In the anaerobic tower, sewage is mainly treated biologically by sludge carrying anaerobic bacteria in an anaerobic environment. It mainly uses anaerobic bacteria to consume organic components in sewage, and anaerobic sludge is usually purchased from outside, which is expensive. In order to reduce the operating cost of the anaerobic tower, extending the service life of anaerobic sludge is a relatively important means. At present, anaerobic sludge is easy to sink to the bottom and calcify in the anaerobic tower. Once calcified, new anaerobic sludge needs to be replaced. The current means to prevent anaerobic sludge from calcification is mainly to set an auxiliary tank next to the anaerobic tower, and the sewage in the anaerobic tower is led out to the auxiliary tank and returned to the anaerobic tower, so as to realize the external circulation of anaerobic sludge carrying sewage, but it only realizes the flow state of sewage, and the phenomenon of anaerobic sludge sinking to the bottom and calcifying in the anaerobic tower body and the auxiliary tank will still occur. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide an anaerobic tower with a simple structure and capable of realizing the up and down circulation of anaerobic sludge in the anaerobic tower.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: an anaerobic tower with internal circulation of sludge, comprising an anaerobic tower body and a first pump body, the anaerobic tower body being provided with a sewage inlet, a sewage outlet, a circulation inlet and a circulation outlet, the circulation inlet being arranged at the lower end of the anaerobic tower body, the first pump body being placed outside the anaerobic tower body, the liquid inlet of the first pump body being connected with the circulation outlet, the liquid outlet of the first pump body being connected with the circulation inlet, the sewage inlet being used to introduce sewage into the anaerobic tower body, and the sewage outlet being used to discharge the sewage in the anaerobic tower body after anaerobically treated.

[0005] The beneficial effect of the above technical solution is that the sewage in the anaerobic tower body can be pumped from the top to the bottom of the anaerobic tower body by the first pump body, thereby realizing the up and down circulation of sewage in the anaerobic tower body. At the same time, the sewage can also impact the bottom of the anaerobic tower body to avoid the deposition of anaerobic sludge at the bottom of the anaerobic tower body.

[0006] In the above technical solution, there are multiple circulation outlets, and the multiple circulation outlets are distributed at intervals along the height direction on the side wall of the anaerobic tower body, and the multiple circulation outlets are all connected to the liquid inlet of the first pump body.

[0007] The beneficial effect of the above technical solution is that its structure is simple, so that the first pump body has multiple water intake points distributed at intervals up and down on the side wall of the anaerobic tower body, which makes the circulation effect of sewage in the anaerobic tower body better.

[0008] In the above technical solution, there are two circulation outlets, the lower circulation outlet is located at 1 / 4-1 / 3 of the height of the anaerobic tower body, and the upper circulation outlet is located at 2 / 3-3 / 4 of the height of the anaerobic tower body.

[0009] The beneficial effect of the above technical solution is that it makes the circulation effect of sewage in the entire anaerobic tower body better.

[0010] In the above technical solution, two first pump bodies are provided, and the two first pump bodies correspond one-to-one to the two circulation outlets. The liquid inlet of each first pump body is connected to the corresponding circulation outlet, and the liquid outlet of each first pump body is connected to the circulation inlet.

[0011] The beneficial effect of the above technical solution is that: in this way, the two circulation outlets can independently have corresponding first pump bodies to circulate and pump sewage, and when any one of the first pump bodies fails, the other first pump body can still operate.

[0012] In the above technical solution, a valve is provided at the liquid outlet of each of the first pump bodies.

[0013] The beneficial effect of the above technical solution is that when any one of the first pump bodies stops running, the corresponding valve can be closed to cut off the flow of sewage at the corresponding first pump body.

[0014] The above technical solution also includes a second pump body, the liquid inlet of the second pump body is connected to the two liquid inlets of the first pump bodies, and the liquid outlet of the second pump body is connected to the two liquid outlets of the first pump bodies.

[0015] The beneficial effect of the above technical solution is that in this way, when any first pump body or both first pump bodies are damaged, the second pump body can still be used for replacement operation.

[0016] The above technical solution also includes a liquid distributor, which is arranged at the inner lower end of the anaerobic tower body. The circulation inlet extends into the anaerobic tower body and is connected to the liquid distributor. The liquid distributor is used to flush the sludge deposited at the bottom of the anaerobic tower body.

[0017] The beneficial effect of the above technical solution is that the sewage circulating into the anaerobic tower body can be evenly distributed at the bottom of the anaerobic tower body, and the bottom of the anaerobic tower body can be fully flushed to avoid anaerobic sludge deposition.

[0018] The liquid distributor in the above technical solution is in the shape of a coil, with one end of it blocked and the other end connected to the circulation inlet. The lower end of the tube wall of the liquid distributor is provided with a plurality of spray holes for spraying liquid downward at intervals along its length direction. The spray holes spray liquid downward to flush the sludge deposited at the bottom of the anaerobic tower body.

[0019] The beneficial effects of the above technical solution are: its structure is simple, and it has a good effect on the distribution of sewage and a good effect on flushing the deposited sludge.

[0020] In the above technical solution, the level of the sewage outlet is higher than the level of the sewage inlet.

[0021] The beneficial effect of the above technical solution is that it has a simple structure.

[0022] In the above technical solution, the sewage outlet is located at the top of the anaerobic tower body, and the sewage inlet is located at 1 / 4-2 / 3 of the height of the anaerobic tower body.

[0023] The beneficial effect of the above technical solution is that it enables top flow drainage in the anaerobic tower body, and its drainage effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the anaerobic tower for internal circulation of sludge according to an embodiment of the utility model;

[0025] Figure 2 Another schematic diagram of the structure of the anaerobic tower with internal circulation of sludge according to the embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the arrangement of the second pump body in an embodiment of the utility model;

[0027] Figure 4 A bottom view of the liquid distributor according to an embodiment of the utility model;

[0028] Figure 5 It is a schematic diagram of the distribution of the two circulation outlets on the side wall of the anaerobic tower body in an embodiment of the utility model.

[0029] In the figure: 1 anaerobic tower body; 11 sewage inlet; 12 sewage outlet; 13 circulation inlet; 14 circulation outlet; 2 first pump body; 21 valve; 3 second pump body; 4 liquid distributor; 41 spray hole. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. According to the following description and claims, the advantages and features of the present invention will be more clearly described. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0031] like Figure 1 As shown, this embodiment provides an anaerobic tower with internal circulation of sludge, including an anaerobic tower body 1 and a first pump body 2, wherein the anaerobic tower body 1 is provided with a sewage inlet 11, a sewage outlet 12, a circulation inlet 13 and a circulation outlet 14, wherein the circulation inlet 13 is arranged at the lower end of the anaerobic tower body 1, and the first pump body 2 is placed outside the anaerobic tower body 1, the liquid inlet of the first pump body 2 is communicated with the circulation outlet 14, and the liquid outlet of the first pump body 2 is communicated with the circulation inlet 13, the sewage inlet 11 is used to introduce sewage into the anaerobic tower body 1, and the sewage outlet 12 is used to discharge the sewage in the anaerobic tower body 1 after anaerobically treated. In this way, the sewage in the anaerobic tower body can be pumped from the top of the anaerobic tower body to the bottom by the first pump body, thereby realizing the up and down circulation of sewage in the anaerobic tower body, and at the same time, the sewage can also impact the bottom of the anaerobic tower body to avoid the deposition of anaerobic sludge at the bottom of the anaerobic tower body.

[0032] In the above technical solution, there are multiple circulation outlets 14, and the multiple circulation outlets 14 are spaced apart along the height direction on the side wall of the anaerobic tower body 1. The multiple circulation outlets 14 are all connected to the liquid inlet of the first pump body 2, and the structure is simple. In this way, the first pump body has multiple water induction points spaced apart up and down on the side wall of the anaerobic tower body, which makes the circulation effect of the sewage in the anaerobic tower body better.

[0033] In the above technical solution, two circulation outlets 14 are provided. The lower circulation outlet 14 is located at 1 / 4-1 / 3 of the height of the anaerobic tower body 1, and the upper circulation outlet 14 is located at 2 / 3-3 / 4 of the height of the anaerobic tower body 1, so that the circulation effect of the sewage in the entire anaerobic tower body is better.

[0034] like Figure 2As shown, in the above technical solution, two first pump bodies 2 are provided, and the two first pump bodies 2 correspond to the two circulation outlets 14 one by one. The liquid inlet of each first pump body 2 is connected with the corresponding circulation outlet 14, and the liquid outlet of each first pump body 2 is connected with the circulation inlet 13, so that the two circulation outlets can independently have corresponding first pump bodies to circulate and pump sewage, and when any one of the first pump bodies fails, the other first pump body can also operate.

[0035] In the above technical solution, a valve 21 is provided at the liquid outlet of each of the first pump bodies 2, so that when any first pump body stops running, the corresponding valve can be closed to cut off the flow of sewage at the corresponding first pump body.

[0036] like Figure 3 As shown, the above technical solution also includes a second pump body 3, the liquid inlet of the second pump body 3 is connected with the liquid inlets of the two first pump bodies 2, and the liquid outlet of the second pump body 3 is connected with the liquid outlets of the two first pump bodies 2, so that the second pump body can be used for alternative operation when any first pump body or both first pump bodies are damaged.

[0037] The above technical solution also includes a liquid distributor 4, which is arranged at the inner lower end of the anaerobic tower body 1. The circulation inlet 13 extends into the anaerobic tower body 1 and is connected to the liquid distributor 4. The liquid distributor 4 is used to flush the sludge deposited at the bottom of the anaerobic tower body 1, so that the sewage circulating into the anaerobic tower body can be evenly distributed at the bottom of the anaerobic tower body, and the bottom of the anaerobic tower body can be fully flushed to avoid anaerobic sludge deposition.

[0038] like Figure 4 As shown, the liquid distributor 4 in the above technical solution is in the shape of a coil, and one end thereof is blocked, and the other end is connected to the circulation inlet 13. The lower end of the tube wall of the liquid distributor 4 is provided with a plurality of spray holes 41 spraying liquid downward at intervals along its length direction. The spray holes 41 spray liquid downward to flush the sludge deposited at the bottom of the anaerobic tower body 1. The structure is simple, and the sewage is well distributed, and the flushing effect on the deposited sludge is also good (the liquid distributor adopts a coil structure, which can also prevent the anaerobic sludge from being deposited on the liquid distributor).

[0039] like Figure 1-Figure 3 As shown, in the above technical solution, the horizontal height of the sewage outlet 12 is higher than the horizontal height of the sewage inlet 11, and its structure is simple. Specifically, the sewage outlet 12 is located at the top of the anaerobic tower body 1, and the sewage inlet 11 is located at 1 / 4-2 / 3 of the height of the anaerobic tower body 1, so that top flow drainage is achieved in the anaerobic tower body, and its drainage effect is good.

[0040] Of course, preferably, Figure 5 As shown, in this embodiment, the two circulation outlets are relatively distributed on the side wall of the anaerobic tower body on the vertical projection plane, so that the sewage in the anaerobic tower body is more evenly distributed during the up and down circulation process.

[0041] The function of the first pump body and the second pump body in this embodiment is to lead the sewage above the anaerobic tower body to impact the bottom of the anaerobic tower body, thereby preventing anaerobic sludge from depositing at the bottom of the anaerobic tower body. At the same time, it also allows the sewage in the anaerobic tower body to circulate up and down, so that the anaerobic sludge is in a state of boiling up and down in the anaerobic tower body, which is beneficial to improving the anaerobic treatment effect of sewage.

[0042] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. An anaerobic tower with internal circulation of sludge, characterized in that: The anaerobic tower body (1) comprises an anaerobic tower body (1) and a first pump body (2). The anaerobic tower body (1) is provided with a sewage inlet (11), a sewage outlet (12), a circulation inlet (13) and a circulation outlet (14). The circulation inlet (13) is arranged at the lower end of the anaerobic tower body (1). The first pump body (2) is placed outside the anaerobic tower body (1). The liquid inlet of the first pump body (2) is connected to the circulation outlet (14). The liquid outlet of the first pump body (2) is connected to the circulation inlet (13). The sewage inlet (11) is used to introduce sewage into the anaerobic tower body (1). The sewage outlet (12) is used to discharge the sewage in the anaerobic tower body (1) after anaerobically treated.

2. The anaerobic tower with internal sludge circulation according to claim 1, characterized in that: A plurality of the circulation outlets (14) are provided, and the plurality of circulation outlets (14) are spaced apart along the height direction on the side wall of the anaerobic tower body (1), and the plurality of circulation outlets (14) are all connected to the liquid inlet of the first pump body (2).

3. The anaerobic tower with internal sludge circulation according to claim 2 is characterized in that: Two circulation outlets (14) are provided. The lower circulation outlet (14) is located at 1 / 4-1 / 3 of the height of the anaerobic tower body (1), and the upper circulation outlet (14) is located at 2 / 3-3 / 4 of the height of the anaerobic tower body (1).

4. The anaerobic tower with internal sludge circulation according to claim 3 is characterized in that: Two first pump bodies (2) are provided, and the two first pump bodies (2) correspond to the two circulation outlets (14) one by one. The liquid inlet of each first pump body (2) is connected to the corresponding circulation outlet (14), and the liquid outlet of each first pump body (2) is connected to the circulation inlet (13).

5. The anaerobic tower with internal sludge circulation according to claim 4 is characterized in that: A valve (21) is provided at the liquid outlet of each of the first pump bodies (2).

6. The anaerobic tower with internal sludge circulation according to claim 5, characterized in that: It also comprises a second pump body (3), the liquid inlet of the second pump body (3) is connected with the liquid inlets of the two first pump bodies (2), and the liquid outlet of the second pump body (3) is connected with the liquid outlets of the two first pump bodies (2).

7. The anaerobic tower with internal sludge circulation according to claim 5, characterized in that: It also comprises a liquid distributor (4), the liquid distributor (4) being arranged at the inner lower end of the anaerobic tower body (1), the circulation inlet (13) extending into the anaerobic tower body (1) and being connected to the liquid distributor (4), the liquid distributor (4) being used to flush the sludge deposited at the bottom of the anaerobic tower body (1).

8. The anaerobic tower with internal sludge circulation according to claim 7, characterized in that: The liquid distributor (4) is in the shape of a coil, one end of which is blocked and the other end is connected to the circulation inlet (13). A plurality of spray holes (41) for spraying liquid downward are arranged at intervals along the length direction at the lower end of the tube wall of the liquid distributor (4). The spray holes (41) spray liquid downward to flush the sludge deposited at the bottom of the anaerobic tower body (1).

9. The anaerobic tower with internal sludge circulation according to any one of claims 1 to 8, characterized in that: The level of the sewage outlet (12) is higher than the level of the sewage inlet (11).

10. The anaerobic tower with internal sludge circulation according to claim 9, characterized in that: The sewage outlet (12) is located at the top of the anaerobic tower body (1), and the sewage inlet (11) is located at 1 / 4-2 / 3 of the height of the anaerobic tower body (1).

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