Biological tank structure for co-building sludge channel

Abstract

The utility model discloses a biological tank structure of a combined sludge channel, belongs to the field of sewage treatment, and solves the problems that a sewage treatment plant has a plurality of pipelines and pipe positions are crossed. A first sludge channel is connected between a membrane tank and an aerobic tank, a second sludge channel is connected between the aerobic tank and an anoxic tank, and a third sludge channel is connected between the anoxic tank and an anaerobic tank. The sludge channels are respectively arranged between the membrane tank and the aerobic tank, between the aerobic tank and the anoxic tank, and between the anoxic tank and the anaerobic tank for sludge backflow, and the sludge channels are jointly built on the inner wall of the biological tank to replace the traditional backflow pipeline structure, so that the laying of corresponding sludge pipelines is reduced, the occupied area is saved, and the engineering investment is saved; and pipeline crossing is avoided, and later operation maintenance and overhaul are facilitated. The device has strong practicability, and is suitable for a newly built or reconstructed biological tank sludge return system of a sewage treatment plant.

Description

Technical Field

[0001] The utility model belongs to the field of sewage treatment, and in particular relates to a biological pool structure for building a sludge channel. Background Art

[0002] Urban sewage treatment plants are used to collect and treat urban sewage. They are important infrastructure necessary for urban development. They are usually located downstream of the city and in low-lying areas. Sewage treatment plants often have large water treatment structures, such as biological pools, and various connecting pipelines. With the development of cities, higher requirements are placed on the construction and operation of sewage treatment plants. In the process of new construction or renovation of sewage treatment plants, they often face the situation of tight construction land and large structures, resulting in crossing problems in the positions of pipelines in the plant area, which seriously affects the later pipeline maintenance and inspection, and increases project investment. In order to avoid the above problems, the present invention proposes a biological pool structure with a combined sludge channel to reduce the direct burial of some sludge pipelines, saving land and investment. Utility Model Content

[0003] The utility model aims to provide a biological pool structure with a combined sludge channel to solve the problem of multiple pipelines and crossover of pipeline positions in a sewage treatment plant.

[0004] The technical solution of the utility model is: a biological pool structure with a combined sludge channel, the biological pool comprises a membrane pool, an aerobic pool, an anoxic pool and an anaerobic pool, a first sludge channel is connected between the membrane pool and the aerobic pool, a second sludge channel is connected between the aerobic pool and the anoxic pool, and a third sludge channel is connected between the anoxic pool and the anaerobic pool.

[0005] As a further improvement of the utility model, the membrane pool is connected to a sludge collection channel, the sludge collection channel is connected to a first pump pit, a first sludge pump is provided at the bottom of the pool wall between the first pump pit and the sludge collection channel, the upper end of the first pump pit is connected to one end of the first sludge channel through a first channel inlet, a first channel outlet is provided at the bottom of the other end of the first sludge channel, and the first channel outlet is connected to the aerobic pool.

[0006] As a further improvement of the utility model, a first inspection port is provided on the top of the first pump pit.

[0007] As a further improvement of the utility model, a second pump pit is provided in the aerobic pool, a second sludge pump is provided at the bottom of the pool wall between the second pump pit and the aerobic pool, the upper end of the second pump pit is connected to one end of the second sludge channel through a second inlet, a second outlet is provided at the bottom of the other end of the second sludge channel, and the second outlet is connected to the anoxic pool.

[0008] As a further improvement of the utility model, a second inspection port is provided on the top of the second pump pit.

[0009] As a further improvement of the utility model, a third pump pit is provided in the anoxic tank, a third sludge pump is provided at the bottom of the tank wall between the third pump pit and the anoxic tank, the upper end of the third pump pit is connected to the third sludge channel through a third inlet, and the third sludge channel is connected to the upper end of the anaerobic tank through a third outlet.

[0010] As a further improvement of the utility model, a third inspection port is provided on the top of the third pump pit.

[0011] The beneficial effects of the utility model are as follows: the utility model respectively sets sludge channels between the membrane pool and the aerobic pool, between the aerobic pool and the anoxic pool, and between the anoxic pool and the anaerobic pool for sludge return, and the sludge channels are built on the inner wall of the biological pool, replacing the traditional return pipe structure, thereby reducing the corresponding sludge pipe laying, saving land, saving engineering investment, and avoiding pipeline crossing, which is conducive to later operation, maintenance and overhaul. The utility model has strong practicality and is suitable for the construction or renovation of the biological pool sludge return system of the sewage treatment plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a plan layout diagram of the utility model;

[0013] Figure 2 It is the upper plane diagram of the membrane pool and aerobic pool of the utility model;

[0014] Figure 3 It is the lower floor plan of the medium membrane pool and aerobic pool of the utility model;

[0015] Figure 4 yes Figure 2 AA view in;

[0016] Figure 5 It is the upper plan view of the aerobic pool and the anoxic pool in the utility model;

[0017] Figure 6 It is a lower floor plan of the aerobic pool and the anoxic pool in the utility model;

[0018] Figure 7 yes Figure 5 BB view in;

[0019] Figure 8 It is the upper plane diagram of the aerobic tank, the anoxic tank and the anaerobic tank in the utility model;

[0020] Fig. 9 It is a lower floor plan of the aerobic tank, the anoxic tank and the anaerobic tank in the utility model;

[0021] Fig.10 yes Figure 8 The CC view in .

[0022] In the figure: 1- membrane tank; 2- aerobic tank; 3- anoxic tank; 4- anaerobic tank; 5- first sludge channel; 51- first inlet; 52- first outlet; 6- second sludge channel; 61- second inlet; 62- second outlet; 7- third sludge channel; 71- third inlet; 72- third outlet; 8- first pump pit; 9- first sludge pump; 10- second pump pit; 11- second sludge pump; 12- third pump pit; 13- third sludge pump; 14- first inspection port; 15- second inspection port; 16- third inspection port; 17- sludge collection channel. DETAILED DESCRIPTION

[0023] The utility model is described in detail below in conjunction with the accompanying drawings.

[0024] Embodiment 1,

[0025] like Figure 1-10 As shown, a biological pool structure with a combined sludge channel is shown, wherein the biological pool includes a membrane pool 1, an aerobic pool 2, an anoxic pool 3 and an anaerobic pool 4, a first sludge channel 5 is connected between the membrane pool 1 and the aerobic pool 2, a second sludge channel 6 is connected between the aerobic pool 2 and the anoxic pool 3, and a third sludge channel 7 is connected between the anoxic pool 3 and the anaerobic pool 4.

[0026] The membrane pool 1 is connected to a sludge collection channel 17, the end of which is connected to a first pump pit 8, a first sludge pump 9 is provided at the bottom of the pool wall between the first pump pit 8 and the sludge collection channel 17, the upper end of the first pump pit 8 is connected to one end of the first sludge channel 5 through a first inlet 51, a first outlet 52 is provided at the bottom of the other end of the first sludge channel 5, and the first outlet 52 is connected to the aerobic pool 2. The first pump pit 8 is located in the aerobic pool 2, and the first sludge channel 5 is provided along the pool wall of the aerobic pool 2 and located at the upper part of the pool body.

[0027] A first inspection opening 14 is provided at the top of the first pump pit 8 .

[0028] A second pump pit 10 is provided in the aerobic pool 2, a second sludge pump 11 is provided at the bottom of the pool wall between the second pump pit 10 and the aerobic pool 2, the upper end of the second pump pit 10 is connected to one end of the second sludge channel 6 through a second inlet 61, a second outlet 62 is provided at the bottom of the other end of the second sludge channel 6, and the second outlet 62 is connected to the anoxic pool 3. The second sludge channel 6 is provided along the pool walls of the aerobic pool 2 and the anoxic pool 3 and is located at the upper part of the pool body.

[0029] A second inspection opening 15 is provided on the top of the second pump pit 10 .

[0030] A third pump pit 12 is provided in the anoxic tank 3, a third sludge pump 13 is provided at the bottom of the tank wall between the third pump pit 12 and the anoxic tank 3, the upper end of the third pump pit 12 is connected to the third sludge channel 7 through a third inlet 71, and the third sludge channel 7 is connected to the upper end of the anaerobic tank 4 through a third outlet 72. The second sludge channel 6 is provided on the tank wall between the aerobic tank 2 and the anoxic tank 3 and is located at the upper part of one side of the aerobic tank 2.

[0031] A third inspection port 16 is provided at the top of the third pump pit 12 .

[0032] The top elevation of the first sludge channel 5, the second sludge channel 6, and the third sludge channel 7 is consistent with the top elevation of the pool, and does not affect the passage of other ancillary facilities. A movable cover can be set on the upper part as needed to serve as an inspection channel for biological pool equipment. The bottom elevation of the first sludge channel 5, the second sludge channel 6, and the third sludge channel 7 is determined comprehensively based on the water depth and liquid level elevation in the channel. The cross-sectional dimensions of the first sludge channel 5, the second sludge channel 6, and the third sludge channel 7 are determined based on the sludge flow in the channel and the flow rate. The first sludge channel 5, the second sludge channel 6, and the third sludge channel 7 can be set with a certain slope as needed. In this embodiment, the slope i=1.5‰ is set.

[0033] During operation, the muddy water in the membrane tank 1 is collected in the sludge collecting channel 17 and pumped to the first pump pit 8 by the first sludge pump 9. When the liquid level in the first pump pit 8 rises to the height of the first inlet 51, the muddy water enters the first sludge channel 5 and then flows into the aerobic tank 2 from the first outlet 52. The muddy water in the aerobic tank 2 is pumped to the second pump pit 10 by the second sludge pump 11. When the liquid level in the second pump pit 10 rises to the height of the second inlet 61, the muddy water enters the second sludge channel 6 and then flows into the anoxic tank 3 from the second outlet 62. The muddy water in the anoxic tank 3 is pumped to the third pump pit 12 by the third sludge pump 13. When the liquid level in the third pump pit 12 rises to the height of the third inlet 71, the muddy water enters the third sludge channel 7 and then flows into the anaerobic tank 4 from the third outlet 72. Thus, the sludge return is completed.

[0034] By setting up the above three sludge channels in the biological pool, the laying of sludge return pipes can be reduced, land can be saved, project investment can be saved, and it is conducive to later operation, maintenance and overhaul, solving the practical problem of various pipeline positions crossing each other due to the shortage of construction land during the construction (including new construction and renovation) of sewage treatment plants.

Claims

1. A biological pool structure for building a sludge channel, the biological pool includes a membrane pool, an aerobic pool, an anoxic pool and an anaerobic pool, characterized in that: A first sludge channel (5) is connected between the membrane tank (1) and the aerobic tank (2), a second sludge channel (6) is connected between the aerobic tank (2) and the anoxic tank (3), and a third sludge channel (7) is connected between the anoxic tank (3) and the anaerobic tank (4).

2. The biological pool structure for building a sludge channel according to claim 1 is characterized by: The membrane pool (1) is connected to a sludge collection channel (17), the sludge collection channel (17) is connected to a first pump pit (8), a first sludge pump (9) is provided at the bottom of the pool wall between the first pump pit (8) and the sludge collection channel (17), the upper end of the first pump pit (8) is connected to one end of the first sludge channel (5) via a first channel inlet (51), the other end of the first sludge channel (5) is provided with a first channel outlet (52) at the bottom, and the first channel outlet (52) is connected to the aerobic pool (2).

3. The biological pool structure for building a sludge channel according to claim 2 is characterized by: A first inspection opening (14) is provided at the top of the first pump pit (8).

4. The biological pool structure with a combined sludge channel according to claim 1 is characterized by: A second pump pit (10) is provided in the aerobic pool (2); a second sludge pump (11) is provided at the bottom of the pool wall between the second pump pit (10) and the aerobic pool (2); the upper end of the second pump pit (10) is connected to one end of the second sludge channel (6) via a second channel inlet (61); a second channel outlet (62) is provided at the bottom of the other end of the second sludge channel (6); and the second channel outlet (62) is connected to the anoxic pool (3).

5. The biological pool structure for building a sludge channel according to claim 4 is characterized by: A second inspection opening (15) is provided at the top of the second pump pit (10).

6. The biological pool structure with a combined sludge channel according to claim 1, characterized in that: A third pump pit (12) is provided in the anoxic tank (3), and a third sludge pump (13) is provided at the bottom of the tank wall between the third pump pit (12) and the anoxic tank (3). The upper end of the third pump pit (12) is connected to the third sludge channel (7) via a third channel inlet (71), and the third sludge channel (7) is connected to the upper end of the anaerobic tank (4) via a third channel outlet (72).

7. The biological pool structure for building a sludge channel according to claim 6, characterized in that: A third inspection opening (16) is provided at the top of the third pump pit (12).

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